Rabbit fish
- Group
- Fish
- Peak month
- September
- Records since 2000
- 4,170
Rabdophaga rosaria
- Group
- True flies
- Peak month
- April
- Records since 2000
- 405
Rabdophaga salicis
- Group
- True flies
- Peak month
- September
- Records since 2000
- 109
Rabocerus gabrieli
- Group
- Beetles
- Peak month
- January
- Records since 2000
- 86
Rachispoda lutosoidea
- Group
- True flies
- Peak month
- August
- Records since 2000
- 109
Radde's Warbler
- Group
- Birds
- Peak month
- October
- Records since 2000
- 566
Radula aquilegia
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 419
Radula lindenbergiana
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 206
Radulomyces confluens
- Group
- Fungi
- Peak month
- November
- Records since 2000
- 386
Radulomyces molaris
- Group
- Fungi
- Peak month
- January
- Records since 2000
- 292
Raft spider
- Group
- Spiders
- Peak month
- July
- Records since 2000
- 181
Raglius alboacuminatus
- Group
- True bugs
- Peak month
- April
- Records since 2000
- 179
Rainbow Greenclock Beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 1,479
Rainbow Trout
- Group
- Fish
- Peak month
- September
- Records since 2000
- 1,750
Rainbow weed, Spiked loosestrife, Purple-loosestrife
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 8,145
Rainbow Wrack
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 878
Ralfsia verrucosa
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 311
Ralfsiella smithii
- Group
- Seaweeds and algae
- Peak month
- May
- Records since 2000
- 52
Ram's Horn Gall Wasp
- Group
- Bees, wasps and ants
- Peak month
- September
- Records since 2000
- 604
Ramalina canariensis
- Group
- Lichens
- Peak month
- August
- Records since 2000
- 451
Ramalina cuspidata
- Group
- Lichens
- Peak month
- August
- Records since 2000
- 333
Ramalina subfarinacea
- Group
- Lichens
- Peak month
- August
- Records since 2000
- 509
Ramariopsis kunzei
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 278
Ramariopsis subtilis
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 86
Rambling Tail-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 3,488
Rambur's Pied Shieldbug
- Group
- True bugs
- Peak month
- September
- Records since 2000
- 775
Rameous bryozoan
- Group
- Bryozoans
- Peak month
- July
- Records since 2000
- 938
Ramonia chrysophaea
- Group
- Lichens
- Peak month
- February
- Records since 2000
- 152
Ramson's Hoverfly
- Group
- True flies
- Peak month
- May
- Records since 2000
- 1,031
Ramsons
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 16,569
Ramularia alpina
- Group
- Fungi
- Peak month
- July
- Records since 2000
- 68
Ramularia ari
- Group
- Fungi
- Peak month
- April
- Records since 2000
- 75
Ramularia caduca
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 71
Ramularia carneola
- Group
- Fungi
- Peak month
- July
- Records since 2000
- 104
Ramularia centranthi
- Group
- Fungi
- Peak month
- June
- Records since 2000
- 57
Ramularia cynarae
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 63
Ramularia didyma
- Group
- Fungi
- Peak month
- June
- Records since 2000
- 111
Ramularia digitalis
- Group
- Fungi
- Peak month
- July
- Records since 2000
- 165
Ramularia glechomatis
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 152
Ramularia inaequalis
- Group
- Fungi
- Peak month
- July
- Records since 2000
- 118
Ramularia interstitialis
- Group
- Fungi
- Peak month
- May
- Records since 2000
- 146
Ramularia lactea
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 173
Ramularia lamii
- Group
- Fungi
- Peak month
- April
- Records since 2000
- 121
Ramularia lapsanae
- Group
- Fungi
- Peak month
- June
- Records since 2000
- 211
Ramularia parietariae
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 67
Ramularia pastinacae-sativae
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 73
Ramularia pratensis
- Group
- Fungi
- Peak month
- July
- Records since 2000
- 186
Ramularia primulae
- Group
- Fungi
- Peak month
- June
- Records since 2000
- 132
Ramularia purpurascens
- Group
- Fungi
- Peak month
- January
- Records since 2000
- 146
Ramularia rhabdospora
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 102
Ramularia rufibasis
- Group
- Fungi
- Peak month
- July
- Records since 2000
- 86
Ramularia sambucina
- Group
- Fungi
- Peak month
- June
- Records since 2000
- 67
Ramularia scolopendrii
- Group
- Fungi
- Peak month
- April
- Records since 2000
- 51
Ramularia septata
- Group
- Fungi
- Peak month
- April
- Records since 2000
- 188
Ramularia simplex
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 126
Ramularia sphaeroidea
- Group
- Fungi
- Peak month
- July
- Records since 2000
- 162
Ramularia triboutiana
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 56
Ramularia urticae
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 338
Ramularia vallisumbrosae
- Group
- Fungi
- Peak month
- April
- Records since 2000
- 92
Rannoch looper
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 82
Rannoch Sprawler
- Group
- Butterflies and moths
- Peak month
- March
- Records since 2000
- 92
Rape
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 1,037
Rape
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 665
Rare Spring-sedge
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 66
Raspailia hispida
- Group
- Sponges
- Peak month
- September
- Records since 2000
- 958
Raspberry
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 6,958
Raspberry Beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 1,300
Raspberry Sawfly
- Group
- Bees, wasps and ants
- Peak month
- May
- Records since 2000
- 51
Raspberry Weevil
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 1,682
Ravinia pernix
- Group
- True flies
- Peak month
- August
- Records since 2000
- 268
Ray's Knotgrass
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 68
Rayed Artemis
- Group
- Molluscs
- Peak month
- July
- Records since 2000
- 2,022
Rayed Glass Snail
- Group
- Molluscs
- Peak month
- July
- Records since 2000
- 1,467
Rayed trough clam
- Group
- Molluscs
- Peak month
- July
- Records since 2000
- 1,310
Rayed trough-shell
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 546
Razor shell
- Group
- Molluscs
- Peak month
- July
- Records since 2000
- 1,273
Razorbill
- Group
- Birds
- Peak month
- June
- Records since 2000
- 66,509
Real's wood white
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 205
Recurvaria leucatella
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 95
Recurvaria nanella
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 100
Recurved sphagnum
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 322
Red Admiral
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 292,792
Red Ant
- Group
- Bees, wasps and ants
- Peak month
- May
- Records since 2000
- 1,529
Red Banded Sand Wasp
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 832
Red bandfish
- Group
- Fish
- Peak month
- October
- Records since 2000
- 1,529
Red Bartsia
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 4,094
Red Beard-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 5,799
Red Bog-moss
- Group
- Mosses
- Peak month
- August
- Records since 2000
- 4,772
Red Campion
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 28,333
Red carpet
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 336
Red Chestnut
- Group
- Butterflies and moths
- Peak month
- April
- Records since 2000
- 1,654
Red Clover
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 23,504
Red Clover Seed Weevil
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 89
Red cracking bolete
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 1,617
Red Crossbill
- Group
- Birds
- Peak month
- October
- Records since 2000
- 25,473
Red Currant
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 2,250
Red cushion stat
- Group
- Starfish and sea urchins
- Peak month
- July
- Records since 2000
- 2,817
Red Dead Men's Fingers
- Group
- Jellyfish, corals and anemones
- Peak month
- July
- Records since 2000
- 1,352
Red Dead-nettle
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 12,869
Red deer
- Group
- Mammals
- Peak month
- October
- Records since 2000
- 8,537
Red Dock Spot
- Group
- Fungi
- Peak month
- May
- Records since 2000
- 1,195
Red Edge Brittlestem
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 585
Red Fescue
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 16,907
Red forklet moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 1,984
Red fox
- Group
- Mammals
- Peak month
- August
- Records since 2000
- 56,196
Red Goosefoot
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 785
Red gurnard, East Atlantic red gurnard
- Group
- Fish
- Peak month
- March
- Records since 2000
- 37,030
Red Hazel Midget
- Group
- Butterflies and moths
- Peak month
- October
- Records since 2000
- 587
Red Hemp-nettle
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 282
Red Hornweed
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 857
Red jasmine
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 746
Red Kite
- Group
- Birds
- Peak month
- April
- Records since 2000
- 270,783
Red Knot
- Group
- Birds
- Peak month
- September
- Records since 2000
- 53,928
Red Legged Spider Wasp
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 559
Red Malachite Beetle
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 1,264
Red Maple
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 559
Red Marsh Ladybird
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 3,168
Red Mason Bee
- Group
- Bees, wasps and ants
- Peak month
- April
- Records since 2000
- 9,008
Red meadow plant bug
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 1,017
Red Oak
- Group
- Flowering plants
- Peak month
- October
- Records since 2000
- 827
Red Phalarope
- Group
- Birds
- Peak month
- September
- Records since 2000
- 3,944
Red Piercer
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 575
Red Pondweed
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 79
Red Poplar Leaf Beetle
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 561
Red Rags
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 3,381
Red Ribbon Worm
- Group
- Other invertebrates
- Peak month
- June
- Records since 2000
- 5,974
Red ripple bryozoan
- Group
- Bryozoans
- Peak month
- December
- Records since 2000
- 1,569
Red rock worm
- Group
- Worms (annelids)
- Peak month
- June
- Records since 2000
- 539
Red seaweed
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 142
Red seaweed
- Group
- Seaweeds and algae
- Peak month
- July
- Records since 2000
- 103
Red seaweed
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 52
Red Star-thistle
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 315
Red Sword-grass
- Group
- Butterflies and moths
- Peak month
- October
- Records since 2000
- 532
Red Thread-gilled Worm
- Group
- Worms (annelids)
- Peak month
- June
- Records since 2000
- 4,250
Red Twin-spot Carpet
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 1,904
Red Underwing
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 773
Red Valerian
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 5,970
Red Wasp
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 708
Red Whelk
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 1,271
Red Worm
- Group
- Worms (annelids)
- Peak month
- October
- Records since 2000
- 1,748
Red-backed Shrike
- Group
- Birds
- Peak month
- September
- Records since 2000
- 4,335
Red-Barked Dogwood
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 208
Red-barred Tortrix
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 2,154
Red-belted Cleaver
- Group
- Bees, wasps and ants
- Peak month
- April
- Records since 2000
- 1,308
Red-berried Elder
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 444
Red-billed Chough
- Group
- Birds
- Peak month
- June
- Records since 2000
- 16,591
Red-breasted Carrion Beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 1,322
Red-breasted Flycatcher
- Group
- Birds
- Peak month
- October
- Records since 2000
- 2,375
Red-breasted Goose
- Group
- Birds
- Peak month
- February
- Records since 2000
- 1,944
Red-breasted Merganser
- Group
- Birds
- Peak month
- January
- Records since 2000
- 59,855
Red-brown click beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 5,384
Red-crested Pochard
- Group
- Birds
- Peak month
- May
- Records since 2000
- 21,379
Red-crusted Pea Mussel
- Group
- Molluscs
- Peak month
- December
- Records since 2000
- 523
Red-eyed Damselfly
- Group
- Dragonflies and damselflies
- Peak month
- June
- Records since 2000
- 40,953
Red-eyed vireo
- Group
- Birds
- Peak month
- October
- Records since 2000
- 368
Red-flanked Bluetail
- Group
- Birds
- Peak month
- October
- Records since 2000
- 1,145
Red-flanked Scymnus
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 800
Red-footed Booby
- Group
- Birds
- Peak month
- August
- Records since 2000
- 201
Red-footed Falcon
- Group
- Birds
- Peak month
- May
- Records since 2000
- 1,755
Red-green Carpet
- Group
- Butterflies and moths
- Peak month
- October
- Records since 2000
- 4,612
Red-headed Bunting
- Group
- Birds
- Peak month
- October
- Records since 2000
- 139
Red-horned Nomad Bee
- Group
- Bees, wasps and ants
- Peak month
- May
- Records since 2000
- 771
Red-legged harp ground beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 1,014
Red-legged Partridge
- Group
- Birds
- Peak month
- April
- Records since 2000
- 77,694
Red-line Quaker
- Group
- Butterflies and moths
- Peak month
- October
- Records since 2000
- 1,253
Red-lined quaker
- Group
- Butterflies and moths
- Peak month
- October
- Records since 2000
- 649
Red-necked footman
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 431
Red-necked Grebe
- Group
- Birds
- Peak month
- January
- Records since 2000
- 6,573
Red-necked Phalarope
- Group
- Birds
- Peak month
- September
- Records since 2000
- 1,950
Red-necked Stint
- Group
- Birds
- Peak month
- June
- Records since 2000
- 112
Red-osier Dogwood
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 758
Red-spotted horseshoe
- Group
- Worms (annelids)
- Peak month
- September
- Records since 2000
- 792
Red-spotted soldier beetle
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 1,081
Red-stemmed Feather-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 13,899
Red-tailed Carder Bee
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 583
Red-tailed Shrike
- Group
- Birds
- Peak month
- July
- Records since 2000
- 558
Red-throated Loon
- Group
- Birds
- Peak month
- October
- Records since 2000
- 61,757
Red-Throated Pipit
- Group
- Birds
- Peak month
- October
- Records since 2000
- 290
Red-tipped cudweed
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 180
Red-veined Darter
- Group
- Dragonflies and damselflies
- Peak month
- June
- Records since 2000
- 4,963
Redclaws
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 3,476
Reddish light arches
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 129
Reddish snail
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 8,969
Redhot poker
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 299
Redshank [moss]
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 21,994
Redshank [plant]
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 5,442
Redwing
- Group
- Birds
- Peak month
- January
- Records since 2000
- 261,212
Reed Bunting
- Group
- Birds
- Peak month
- May
- Records since 2000
- 350,041
Reed Canary-grass
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 8,811
Reed dagger
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 169
Reed Leopard
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 183
Reed Sweet-grass
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 2,809
Reeves's Pheasant
- Group
- Birds
- Peak month
- April
- Records since 2000
- 115
Reflexed Saltmarsh-grass
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 442
Reflexed Stonecrop
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 789
Reichenbachia juncorum
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 117
Reichertella geniculata
- Group
- True flies
- Peak month
- July
- Records since 2000
- 82
Reimeria sinuata
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,874
Reimeria uniseriata
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 215
Reindeer Lichen
- Group
- Lichens
- Peak month
- August
- Records since 2000
- 4,213
Reindeer Lichen
- Group
- Lichens
- Peak month
- September
- Records since 2000
- 1,094
Relative diver
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 214
Remote Sedge
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 4,173
Renibacterium salmoninarum
- Group
- Microorganisms and protists
- Records since 2000
- 162
- Kingdom
- Bacteria
Renocera pallida
- Group
- True flies
- Peak month
- June
- Records since 2000
- 165
Reptadeonella insidiosa
- Group
- Bryozoans
- Peak month
- August
- Records since 2000
- 220
Reptadeonella violacea
- Group
- Bryozoans
- Peak month
- August
- Records since 2000
- 1,585
Reptalus quinquecostatus
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 91
Rescuegrass
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 119
Resin sarea lichen
- Group
- Fungi
- Peak month
- March
- Records since 2000
- 72
Resinicium bicolor
- Group
- Fungi
- Peak month
- April
- Records since 2000
- 248
Resinomycena saccharifera
- Group
- Fungi
- Peak month
- January
- Records since 2000
- 162
Resupinatus applicatus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 248
Resupinatus poriaeformis
- Group
- Fungi
- Peak month
- November
- Records since 2000
- 53
Resupinatus trichotis
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 127
Reteporella beaniana
- Group
- Bryozoans
- Peak month
- May
- Records since 2000
- 96
Reticulated Dragonet
- Group
- Fish
- Peak month
- September
- Records since 2000
- 2,126
Retusa umbilicata
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 910
Reversed clover
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 64
Revolute Beard-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 1,901
Reynoutria bohemica
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 93
Rhabdiopteryx acuminata
- Group
- Stoneflies
- Peak month
- March
- Records since 2000
- 98
Rhabdomastix edwardsi
- Group
- True flies
- Peak month
- May
- Records since 2000
- 111
Rhabdoweisia moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 454
Rhacodiopsis rupestris
- Group
- Fungi
- Peak month
- May
- Records since 2000
- 122
Rhagio notatus
- Group
- True flies
- Peak month
- May
- Records since 2000
- 92
Rhagium inquisitor
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 80
Rhagium mordax
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 1,606
Rhagoletis alternata
- Group
- True flies
- Peak month
- July
- Records since 2000
- 77
Rhagoletis batava
- Group
- True flies
- Peak month
- July
- Records since 2000
- 61
Rhagonycha lignosa
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 1,434
Rhagonycha lutea
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 257
Rhagonycha nigriventris
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 1,317
Rhagonycha testacea
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 516
Rhamphomyia caliginosa
- Group
- True flies
- Peak month
- June
- Records since 2000
- 89
Rhamphomyia crassirostris
- Group
- True flies
- Peak month
- May
- Records since 2000
- 701
Rhamphomyia erythrophthalma
- Group
- True flies
- Peak month
- August
- Records since 2000
- 52
Rhamphomyia erythropthalma
- Group
- True flies
- Peak month
- October
- Records since 2000
- 94
Rhamphomyia flava
- Group
- True flies
- Peak month
- June
- Records since 2000
- 156
Rhamphomyia hybotina
- Group
- True flies
- Peak month
- May
- Records since 2000
- 64
Rhamphomyia longipes
- Group
- True flies
- Peak month
- June
- Records since 2000
- 162
Rhamphomyia nigripennis
- Group
- True flies
- Peak month
- June
- Records since 2000
- 150
Rhamphomyia pilifer
- Group
- True flies
- Peak month
- May
- Records since 2000
- 91
Rhamphomyia stigmosa
- Group
- True flies
- Peak month
- May
- Records since 2000
- 101
Rhamphomyia sulcata
- Group
- True flies
- Peak month
- May
- Records since 2000
- 122
Rhamphomyia tarsata
- Group
- True flies
- Peak month
- June
- Records since 2000
- 105
Rhamphomyia tibiella
- Group
- True flies
- Peak month
- May
- Records since 2000
- 72
Rhamphomyia umbripennis
- Group
- True flies
- Peak month
- May
- Records since 2000
- 187
Rhamphomyia variabilis
- Group
- True flies
- Peak month
- August
- Records since 2000
- 88
Rhamphus oxyacanthae
- Group
- Beetles
- Peak month
- October
- Records since 2000
- 432
Rhamphus pulicarius
- Group
- Beetles
- Peak month
- November
- Records since 2000
- 392
Rhantus exsoletus
- Group
- Beetles
- Peak month
- April
- Records since 2000
- 391
Rhantus suturellus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 196
Rhaphidicyrtis trichosporella
- Group
- Fungi
- Peak month
- March
- Records since 2000
- 69
Rhaphium auctum
- Group
- True flies
- Peak month
- June
- Records since 2000
- 62
Rhaphium brevicorne
- Group
- True flies
- Peak month
- July
- Records since 2000
- 56
Rhaphium caliginosum
- Group
- True flies
- Peak month
- July
- Records since 2000
- 161
Rhaphium discolor
- Group
- True flies
- Peak month
- June
- Records since 2000
- 68
Rhaphium longicorne
- Group
- True flies
- Peak month
- June
- Records since 2000
- 83
Rhaphium macrocerum
- Group
- True flies
- Peak month
- June
- Records since 2000
- 168
Rhaphium monotrichum
- Group
- True flies
- Peak month
- June
- Records since 2000
- 84
Rhaphoneis amphiceros
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 257
Rhegmoclema coxendix
- Group
- True flies
- Peak month
- July
- Records since 2000
- 53
Rheocricotopus fuscipes
- Group
- True flies
- Peak month
- December
- Records since 2000
- 205
Rheotanytarsus photophilus
- Group
- True flies
- Peak month
- September
- Records since 2000
- 1,241
Rheumaptera undulata
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 312
Rhincalanus nasutus
- Group
- Crustaceans
- Peak month
- September
- Records since 2000
- 96
Rhingia campestris
- Group
- True flies
- Peak month
- May
- Records since 2000
- 9,678
Rhinoceros Beetle
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 1,303
Rhinoncus bruchoides
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 65
Rhinoncus inconspectus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 118
Rhinoncus leucostigma
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 53
Rhinoncus pericarpius
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 1,309
Rhinoncus perpendicularis
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 245
Rhinusa antirrhini
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 166
Rhipidia maculata
- Group
- True flies
- Peak month
- May
- Records since 2000
- 2,713
Rhipidipathes reticulata
- Group
- Jellyfish, corals and anemones
- Peak month
- August
- Records since 2000
- 540
Rhithrogena germanica
- Group
- Mayflies
- Peak month
- April
- Records since 2000
- 57
Rhizidium phycophilum
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 111
Rhizobium leguminosarum
- Group
- Microorganisms and protists
- Peak month
- October
- Records since 2000
- 352
Rhizobium ruizarguesonis
- Group
- Microorganisms and protists
- Peak month
- October
- Records since 2000
- 198
Rhizocarpon infernulum
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 131
Rhizocarpon reductum
- Group
- Lichens
- Peak month
- September
- Records since 2000
- 3,863
Rhizocarpon richardii
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 359
Rhizocarpon viridiatrum
- Group
- Lichens
- Peak month
- November
- Records since 2000
- 66
Rhizocaulus verticillatus
- Group
- Jellyfish, corals and anemones
- Peak month
- May
- Records since 2000
- 266
Rhizoclonium riparium
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 150
Rhizomarasmius setosus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 390
Rhizomnium pseudopunctatum
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 329
Rhizophagus bipustulatus
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 344
Rhizophagus depressus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 62
Rhizophagus dispar
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 605
Rhizophagus ferrugineus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 119
Rhizophagus perforatus
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 56
Rhizopogon luteolus
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 117
Rhizosolenia delicatula
- Group
- Seaweeds and algae
- Peak month
- June
- Records since 2000
- 1,346
Rhizosolenia flaccida
- Group
- Seaweeds and algae
- Peak month
- June
- Records since 2000
- 668
Rhizosolenia fragillissima
- Group
- Seaweeds and algae
- Peak month
- June
- Records since 2000
- 547
Rhizosolenia imbricata
- Group
- Seaweeds and algae
- Peak month
- May
- Records since 2000
- 2,309
Rhizosolenia indica
- Group
- Seaweeds and algae
- Peak month
- May
- Records since 2000
- 192
Rhizosolenia robusta
- Group
- Seaweeds and algae
- Peak month
- April
- Records since 2000
- 197
Rhizosolenia semispina
- Group
- Seaweeds and algae
- Peak month
- May
- Records since 2000
- 1,490
Rhizosolenia shrubsolei
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 61
Rhizosolenia styliformis
- Group
- Seaweeds and algae
- Peak month
- April
- Records since 2000
- 1,749
Rhizotrogus aestivus
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 52
Rhodaphodius foetens
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 204
Rhodine gracilior
- Group
- Worms (annelids)
- Peak month
- May
- Records since 2000
- 796
Rhodine loveni
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 373
Rhodochorton purpureum
- Group
- Seaweeds and algae
- Peak month
- June
- Records since 2000
- 347
Rhodocollybia asema
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 310
Rhodocollybia prolixa
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 60
Rhododendron
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 11,503
Rhododendron leafhopper
- Group
- True bugs
- Peak month
- August
- Records since 2000
- 1,156
Rhodomela confervoides
- Group
- Seaweeds and algae
- Peak month
- June
- Records since 2000
- 528
Rhodophaea formosa
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 118
Rhodophyllis divaricata
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 630
Rhodotorula diobovata
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 541
Rhodotorula mucilaginosa
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 571
Rhodotorula sphaerocarpa
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 1,080
Rhodymenia ardissonei
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 396
Rhodymenia holmesii
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 888
Rhodymenia pseudopalmata
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 410
Rhogogaster chlorosoma
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 214
Rhogogaster punctulata
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 94
Rhogogaster scalaris
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 229
Rhogogaster viridis
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 53
Rhoicosphenia abbreviata
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,005
Rhombic Leatherbug
- Group
- True bugs
- Peak month
- April
- Records since 2000
- 721
Rhombosepion orbignyanum
- Group
- Molluscs
- Peak month
- July
- Records since 2000
- 264
Rhopalapion longirostre
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 191
Rhopalomenia aglaopheniae
- Group
- Molluscs
- Peak month
- March
- Records since 2000
- 58
Rhopalomesites tardii
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 59
Rhopalopterum anthracinum
- Group
- True flies
- Peak month
- June
- Records since 2000
- 87
Rhopalum clavipes
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 88
Rhopalum coarctatum
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 158
Rhopalus maculatus
- Group
- True bugs
- Peak month
- May
- Records since 2000
- 76
Rhopalus parumpunctatus
- Group
- True bugs
- Peak month
- August
- Records since 2000
- 464
Rhyacionia buoliana
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 73
Rhyacionia pinicolana
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 296
Rhyacionia pinivorana
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 328
Rhyacophila fasciata
- Group
- Caddisflies
- Peak month
- May
- Records since 2000
- 722
Rhyacophila munda
- Group
- Caddisflies
- Peak month
- April
- Records since 2000
- 787
Rhyacophila obliterata
- Group
- Caddisflies
- Peak month
- September
- Records since 2000
- 541
Rhynchaenus punctiger
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 96
Rhynchites auratus
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 88
Rhynchostegiella curviseta
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 131
Rhynchostegiella litorea
- Group
- Mosses
- Peak month
- December
- Records since 2000
- 69
Rhynchostegium alopecuroides
- Group
- Mosses
- Peak month
- August
- Records since 2000
- 370
Rhynchozoon bispinosum
- Group
- Bryozoans
- Peak month
- August
- Records since 2000
- 1,335
Rhyparochromus pini
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 125
Rhyparochromus vulgaris
- Group
- True bugs
- Peak month
- May
- Records since 2000
- 480
Rhypholophus bifurcatus
- Group
- True flies
- Peak month
- October
- Records since 2000
- 213
Rhypholophus varius
- Group
- True flies
- Peak month
- September
- Records since 2000
- 260
Rhypophila pleiospora
- Group
- Fungi
- Peak month
- January
- Records since 2000
- 56
Rhyssa persuasoria
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 133
Rhytisma salicinum
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 295
Rhytistylus proceps
- Group
- True bugs
- Peak month
- August
- Records since 2000
- 111
Rhyzobius forestieri
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 315
Riband Wave
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 15,556
Ribautiana debilis
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 817
Ribbed extinguisher-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 67
Ribbed Grass Snail
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 586
Ribbed Melilot
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 520
Ribbonwort
- Group
- Liverworts
- Peak month
- March
- Records since 2000
- 289
Ribwort Plantain
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 39,026
Ribwort Slender
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 595
Ricasolia virens
- Group
- Lichens
- Peak month
- March
- Records since 2000
- 1,854
Riccardia incurvata
- Group
- Liverworts
- Peak month
- May
- Records since 2000
- 138
Riccardia latifrons
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 363
Riccia beyrichiana
- Group
- Liverworts
- Peak month
- February
- Records since 2000
- 342
Riccia cavernosa
- Group
- Liverworts
- Peak month
- September
- Records since 2000
- 372
Riccia crozalsii
- Group
- Liverworts
- Peak month
- March
- Records since 2000
- 350
Riccia subbifurca
- Group
- Liverworts
- Peak month
- February
- Records since 2000
- 338
Ricciocarpos natans
- Group
- Liverworts
- Peak month
- August
- Records since 2000
- 176
Rice cut-grass
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 151
Rice Leaf Bug
- Group
- True bugs
- Peak month
- August
- Records since 2000
- 196
Richard's/Blyth's Pipit
- Group
- Birds
- Peak month
- October
- Records since 2000
- 1,208
Richtersia inaequalis
- Group
- Roundworms
- Peak month
- May
- Records since 2000
- 111
Rickettsiella
- Group
- Microorganisms and protists
- Records since 2000
- 285
- Counties with records
- 7
Ridge-saddled Carpenter Bee
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 571
Ridged Tooth
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 526
Righthanded Hermit Crab
- Group
- Crustaceans
- Peak month
- August
- Records since 2000
- 709
Rigid Aloe-moss
- Group
- Mosses
- Peak month
- November
- Records since 2000
- 64
Rigid Bog-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 1,216
Rigid Hornwort
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 691
Rigidoporus sanguinolentus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 239
Rigidoporus ulmarius
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 105
Rim lichen
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 5,376
Rim lichen
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 4,199
Rim lichen
- Group
- Lichens
- Peak month
- April
- Records since 2000
- 1,237
Rim lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 1,198
Rim lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 1,138
Rim lichen
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 429
Rim lichen
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 219
Rim lichen
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 112
Rim lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 92
Rimmed lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 111
Rimularia intercedens
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 55
Ring Ouzel
- Group
- Birds
- Peak month
- April
- Records since 2000
- 13,904
Ring-billed Gull
- Group
- Birds
- Peak month
- January
- Records since 2000
- 1,313
Ring-necked Duck
- Group
- Birds
- Peak month
- January
- Records since 2000
- 5,556
Ring-necked Pheasant
- Group
- Birds
- Peak month
- April
- Records since 2000
- 488,646
Ringed carpet
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 68
Ringed China-mark
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 1,652
Ringed Teal
- Group
- Birds
- Peak month
- November
- Records since 2000
- 123
Ringed Tigress
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 557
Ringed tubularia
- Group
- Jellyfish, corals and anemones
- Peak month
- August
- Records since 2000
- 620
Ringless Hook-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 1,833
Ringlet
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 520,519
Rinodina beccariana
- Group
- Lichens
- Peak month
- September
- Records since 2000
- 71
Rinodina biloculata
- Group
- Lichens
- Peak month
- October
- Records since 2000
- 52
Rinodina calcarea
- Group
- Lichens
- Peak month
- October
- Records since 2000
- 90
Rinodina lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 150
Rinodina luridescens
- Group
- Lichens
- Peak month
- September
- Records since 2000
- 100
Rinodina oleae
- Group
- Lichens
- Peak month
- August
- Records since 2000
- 1,868
Rinodina roboris
- Group
- Lichens
- Peak month
- October
- Records since 2000
- 672
Rinodina sophodes
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 501
Rinodina teichophila
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 574
Riolus cupreus
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 51
Riolus subviolaceus
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 230
Ripgut brome
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 210
Risso's Crab
- Group
- Crustaceans
- Peak month
- September
- Records since 2000
- 477
Risso's dolphin
- Group
- Mammals
- Peak month
- August
- Records since 2000
- 581
Rissoa lilacina
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 108
Rissoa membranacea
- Group
- Molluscs
- Peak month
- July
- Records since 2000
- 405
Rissoella diaphana
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 154
Rissoella opalina
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 121
Rivellia syngenesiae
- Group
- True flies
- Peak month
- June
- Records since 2000
- 638
River Bristle-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 663
River Feather-moss
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 11,799
River Grimmia
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 1,582
River Jelly Lichen
- Group
- Lichens
- Peak month
- September
- Records since 2000
- 524
River Limpet
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 4,616
River Pocket-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 167
River Skater
- Group
- True bugs
- Peak month
- September
- Records since 2000
- 386
River Water-Crowfoot
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 277
River Water-dropwort
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 92
Rivularia atra
- Group
- Microorganisms and protists
- Peak month
- October
- Records since 2000
- 119
Rivularia bullata
- Group
- Microorganisms and protists
- Peak month
- August
- Records since 2000
- 85
Rivulet
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 510
Roach
- Group
- Fish
- Peak month
- August
- Records since 2000
- 2,073
Robertus lividus
- Group
- Spiders
- Peak month
- July
- Records since 2000
- 253
Roble beech
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 90
Robust nail lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 84
Roccella lichen
- Group
- Lichens
- Peak month
- September
- Records since 2000
- 272
Roccella lichen
- Group
- Lichens
- Peak month
- September
- Records since 2000
- 87
Roccellographa circumscripta
- Group
- Lichens
- Peak month
- September
- Records since 2000
- 121
Rocellaria dubia
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 360
Rock Cook
- Group
- Fish
- Peak month
- June
- Records since 2000
- 2,262
Rock Crane's-bill
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 2,829
Rock Fingerwort
- Group
- Liverworts
- Peak month
- January
- Records since 2000
- 917
Rock Goby
- Group
- Fish
- Peak month
- July
- Records since 2000
- 693
Rock gunnel, Butterfish
- Group
- Fish
- Peak month
- June
- Records since 2000
- 5,560
Rock Lady's-mantle
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 50
Rock Pigeon
- Group
- Birds
- Peak month
- April
- Records since 2000
- 571,038
Rock Pipit
- Group
- Birds
- Peak month
- October
- Records since 2000
- 90,101
Rock Pocket-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 6,047
Rock Ptarmigan
- Group
- Birds
- Peak month
- May
- Records since 2000
- 1,814
Rock Samphire
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 1,995
Rock Sea-lavenders
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 56
Rock Sea-spurrey
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 95
Rock Sea-spurrey
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 69
Rock snail
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 842
Rock Speedwell
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 186
Rock Stonecrop
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 201
Rock Urchin
- Group
- Starfish and sea urchins
- Peak month
- June
- Records since 2000
- 1,770
Rock Veilwort
- Group
- Liverworts
- Peak month
- May
- Records since 2000
- 1,448
Rock-loving Map Lichen
- Group
- Lichens
- Peak month
- April
- Records since 2000
- 465
Rockhopper beetle
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 97
Rockhopper Penguin
- Group
- Birds
- Peak month
- October
- Records since 2000
- 74
Rockloving lecidea lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 877
Rodgersia
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 567
Roesel's Bush Cricket
- Group
- Grasshoppers and crickets
- Peak month
- July
- Records since 2000
- 14,752
Roeslerstammia erxlebella
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 149
Rolandia coralloides
- Group
- Jellyfish, corals and anemones
- Peak month
- May
- Records since 2000
- 219
Roller
- Group
- Birds
- Peak month
- June
- Records since 2000
- 424
Rollrim Mould
- Group
- Fungi
- Peak month
- January
- Records since 2000
- 710
Roman Snail
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 1,128
Romjularia lurida
- Group
- Lichens
- Peak month
- November
- Records since 2000
- 136
Romualdius angustisetulus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 215
Romualdius scaber
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 87
Roncus lubricus
- Group
- Mites, harvestmen and other arachnids
- Peak month
- October
- Records since 2000
- 143
Rondaniola bursaria
- Group
- True flies
- Peak month
- October
- Records since 2000
- 136
Rook
- Group
- Birds
- Peak month
- April
- Records since 2000
- 495,913
Root Rot
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 1,363
Root-maggot Fly
- Group
- True flies
- Peak month
- May
- Records since 2000
- 676
Roothole Rosette
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 57
Rooting Bolete
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 340
Ropalospora viridis
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 158
Roridomyces roridus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 279
Rosa corymbifera
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 55
Rosa obtusifolia
- Group
- Flowering plants
- Peak month
- September
- Records since 2000
- 62
Rose Aphid
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 342
Rose Chafer
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 3,010
Rose Leaf-rolling Sawfly
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 903
Rose of Sharon
- Group
- Flowering plants
- Peak month
- September
- Records since 2000
- 85
Rose rhodobryum moss
- Group
- Mosses
- Peak month
- December
- Records since 2000
- 375
Rose Rust
- Group
- Fungi
- Peak month
- May
- Records since 2000
- 481
Rose Stem Girdler
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 127
Rose-of-Sharon
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 3,039
Rose-petalled Jellyskin Lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 788
Rose-ringed Parakeet
- Group
- Birds
- Peak month
- April
- Records since 2000
- 174,921
Roseate Tern
- Group
- Birds
- Peak month
- July
- Records since 2000
- 4,046
Rosellinia aquila
- Group
- Fungi
- Peak month
- April
- Records since 2000
- 143
Rosellinia britannica
- Group
- Fungi
- Peak month
- March
- Records since 2000
- 76
Rosellinia mammiformis
- Group
- Fungi
- Peak month
- April
- Records since 2000
- 97
Rosemary
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 163
Rosemary Beetle
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 3,296
Rosenscheldia abundans
- Group
- Fungi
- Peak month
- November
- Records since 2000
- 60
Roseomonas rosea
- Group
- Microorganisms and protists
- Peak month
- January
- Records since 2000
- 196
Roseomonas stagni
- Group
- Microorganisms and protists
- Peak month
- January
- Records since 2000
- 203
Roseroot Stonecrop
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 668
Rosette Pixie-cup Lichen
- Group
- Lichens
- Peak month
- November
- Records since 2000
- 480
Ross Coral
- Group
- Bryozoans
- Peak month
- January
- Records since 2000
- 823
Ross Worm
- Group
- Worms (annelids)
- Peak month
- June
- Records since 2000
- 12,869
Ross's Goose
- Group
- Birds
- Peak month
- January
- Records since 2000
- 1,467
Ross's Gull
- Group
- Birds
- Peak month
- January
- Records since 2000
- 315
Rostanga rubra
- Group
- Molluscs
- Peak month
- June
- Records since 2000
- 111
Rosulabryum bornholmense
- Group
- Mosses
- Peak month
- November
- Records since 2000
- 156
Rosulabryum canariense
- Group
- Mosses
- Peak month
- February
- Records since 2000
- 172
Rosulabryum donianum
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 403
Rosulabryum elegans
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 68
Rosulabryum moravicum
- Group
- Mosses
- Peak month
- February
- Records since 2000
- 1,081
Rosulabryum rubens
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 7,932
Rosulabryum torquescens
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 195
Rosy Bonnet
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 1,345
Rosy Crust
- Group
- Fungi
- Peak month
- February
- Records since 2000
- 637
Rosy Feather-star
- Group
- Starfish and sea urchins
- Peak month
- September
- Records since 2000
- 4,848
Rosy Footman
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 2,303
Rosy Garlic
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 618
Rosy marbled
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 50
Rosy minor
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 402
Rosy Rustic
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 4,443
Rosy Starfish
- Group
- Starfish and sea urchins
- Peak month
- August
- Records since 2000
- 858
Rosy Starling
- Group
- Birds
- Peak month
- June
- Records since 2000
- 1,860
Rosy Tabby
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 3,822
Rosy woodlouse
- Group
- Crustaceans
- Peak month
- April
- Records since 2000
- 209
Rosy-tip Worm
- Group
- Worms (annelids)
- Peak month
- April
- Records since 2000
- 1,481
Rotavirus A
- Group
- Microorganisms and protists
- Records since 2000
- 191
- Kingdom
- Viruses
Rotund disc
- Group
- Molluscs
- Peak month
- April
- Records since 2000
- 8,184
Rough barnacle
- Group
- Crustaceans
- Peak month
- September
- Records since 2000
- 1,451
Rough Chervil
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 2,981
Rough Clover
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 146
Rough Earwort
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 1,371
Rough Hawk's-beard
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 441
Rough Hawkbit
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 3,881
Rough Horsetail
- Group
- Ferns and horsetails
- Peak month
- August
- Records since 2000
- 104
Rough Meadow-grass
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 11,534
Rough Periwinkle
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 2,933
Rough Poppy
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 89
Rough scallop sponge
- Group
- Sponges
- Peak month
- July
- Records since 2000
- 1,352
Rough Violet Ground Beetle
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 2,265
Rough whorl snail
- Group
- Molluscs
- Peak month
- July
- Records since 2000
- 514
Rough-fruited cinquefoil
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 233
Rough-legged Hawk
- Group
- Birds
- Peak month
- January
- Records since 2000
- 1,621
Rough-stalked Feather-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 41,342
Rough-toothed dolphin
- Group
- Mammals
- Peak month
- October
- Records since 2000
- 100
Round Skate, Round Ray, Sandy Skate
- Group
- Fish
- Peak month
- June
- Records since 2000
- 281
Round-fruited Collar-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 501
Round-fruited Rush
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 123
Round-headed Rampion
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 468
Round-keeled Rhyzobius
- Group
- Beetles
- Peak month
- October
- Records since 2000
- 5,110
Round-leaved Crane's-bill
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 1,143
Round-leaved Crowfoot
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 634
Round-leaved Fluellen
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 494
Round-leaved Mint
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 138
Round-leaved Sundew
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 4,644
Round-leaved Wintergreen
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 275
Round-mouthed Snail
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 1,038
Round-winged Muslin
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 564
Roundnose grenadier, Roundhead Rat-tail
- Group
- Fish
- Peak month
- September
- Records since 2000
- 518
Roundspored Oysterling
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 1,297
Rove beetle
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 985
Rove beetle
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 925
Rove beetle
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 824
Rove beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 788
Rove beetle
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 521
Rowan
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 21,307
Roxania utriculus
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 117
Royal Albatross
- Group
- Birds
- Peak month
- October
- Records since 2000
- 74
Royal Fern
- Group
- Ferns and horsetails
- Peak month
- June
- Records since 2000
- 1,063
Royal Tern
- Group
- Birds
- Peak month
- October
- Records since 2000
- 94
Rubramoena rubescens
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 52
Rubroboletus legaliae
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 86
Rubus cardiophyllus
- Group
- Flowering plants
- Records since 2000
- 50
- Counties with records
- 5
Rubus cissburiensis
- Group
- Flowering plants
- Peak month
- September
- Records since 2000
- 74
Rubus cockburnianus
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 96
Rubus dasyphyllus
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 227
Rubus echinatus
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 110
Rubus elegantispinosus
- Group
- Flowering plants
- Peak month
- March
- Records since 2000
- 96
Rubus horrefactus
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 1,072
Rubus lindleyanus
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 130
Rubus nemoralis
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 90
Rubus pruinosus
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 123
Rubus rufescens
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 89
Rubus tricolor
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 410
Rubus vestitus
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 248
Rubus wirralensis
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 51
Ruby Bolete
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 267
Ruby Tiger Moth
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 4,565