Fabricia stellaris
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 291
Fabriciola baltica
- Group
- Worms (annelids)
- Peak month
- April
- Records since 2000
- 63
Fabricius' Nomad Bee
- Group
- Bees, wasps and ants
- Peak month
- April
- Records since 2000
- 1,397
Face Fly
- Group
- True flies
- Peak month
- July
- Records since 2000
- 2,314
Fagisyrphus cincta
- Group
- True flies
- Peak month
- April
- Records since 2000
- 401
Fagniezia impressa
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 86
Fagocyba cruenta
- Group
- True bugs
- Peak month
- August
- Records since 2000
- 157
Fairy beads
- Group
- Liverworts
- Peak month
- March
- Records since 2000
- 5,322
Fairy Flax
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 5,139
Fairy Inkcap
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 1,397
Fairy Ring Champignon
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 1,303
Falcated Duck
- Group
- Birds
- Peak month
- December
- Records since 2000
- 52
Fallacia subhamulata
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 171
Fallow deer
- Group
- Mammals
- Peak month
- October
- Records since 2000
- 15,521
False Agardhiela
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 865
False Beard Moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 7,207
False Brome
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 7,325
False Chanterelle
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 2,094
False Deathcap
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 1,847
False Fox-sedge
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 2,785
False Hook-lobed Dandelion
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 209
False Irish Moss
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 2,553
False Ivy-Leaved Speedwell
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 1,848
False Ladybird
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 961
False Mocha
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 60
False Oat-grass
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 16,693
False Oil Beetle
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 21,524
False Pepper Dulse
- Group
- Seaweeds and algae
- Peak month
- May
- Records since 2000
- 919
False Puffball
- Group
- Microorganisms and protists
- Peak month
- April
- Records since 2000
- 905
False Sedge
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 224
False spiraea
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 59
False-acacia
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 2,142
Falseuncaria ruficiliana
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 108
Familiar harp round beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 1,464
Fan mussel
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 149
Fan-bearing Wood-borer
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 789
Fan-bristled Robberfly
- Group
- True flies
- Peak month
- June
- Records since 2000
- 1,208
Fan-foot
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 3,000
Fan-leaved Water-crowfoot
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 129
Fan-shaped moss animal
- Group
- Bryozoans
- Peak month
- July
- Records since 2000
- 2,074
Fannia aequilineata
- Group
- True flies
- Peak month
- August
- Records since 2000
- 108
Fannia armata
- Group
- True flies
- Peak month
- June
- Records since 2000
- 2,275
Fannia coracina
- Group
- True flies
- Peak month
- July
- Records since 2000
- 105
Fannia fuscula
- Group
- True flies
- Peak month
- July
- Records since 2000
- 263
Fannia genualis
- Group
- True flies
- Peak month
- May
- Records since 2000
- 173
Fannia lepida
- Group
- True flies
- Peak month
- May
- Records since 2000
- 81
Fannia lustrator
- Group
- True flies
- Peak month
- May
- Records since 2000
- 488
Fannia manicata
- Group
- True flies
- Peak month
- April
- Records since 2000
- 92
Fannia mollissima
- Group
- True flies
- Peak month
- April
- Records since 2000
- 253
Fannia pallitibia
- Group
- True flies
- Peak month
- September
- Records since 2000
- 170
Fannia parva
- Group
- True flies
- Peak month
- September
- Records since 2000
- 164
Fannia pauli
- Group
- True flies
- Peak month
- June
- Records since 2000
- 78
Fannia polychaeta
- Group
- True flies
- Peak month
- July
- Records since 2000
- 322
Fannia postica
- Group
- True flies
- Peak month
- June
- Records since 2000
- 511
Fannia rondanii
- Group
- True flies
- Peak month
- July
- Records since 2000
- 489
Fannia scalaris
- Group
- True flies
- Peak month
- June
- Records since 2000
- 62
Fannia serena
- Group
- True flies
- Peak month
- June
- Records since 2000
- 1,050
Fannia similis
- Group
- True flies
- Peak month
- June
- Records since 2000
- 695
Fannia sociella
- Group
- True flies
- Peak month
- June
- Records since 2000
- 881
Fannia subsimilis
- Group
- True flies
- Peak month
- June
- Records since 2000
- 131
Fannia umbrosa
- Group
- True flies
- Peak month
- July
- Records since 2000
- 178
Farkasiella gelatinosa
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 71
Faroe sunset shell
- Group
- Molluscs
- Peak month
- June
- Records since 2000
- 1,548
Farysia thuemenii
- Group
- Fungi
- Peak month
- June
- Records since 2000
- 124
Fascicularia bicolor
- Group
- Flowering plants
- Peak month
- September
- Records since 2000
- 164
Fasciola hepatica
- Group
- Flatworms
- Records since 2000
- 63
- Kingdom
- Animalia
Fat Duckweed
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 326
Fat-bud thread-moss
- Group
- Mosses
- Peak month
- September
- Records since 2000
- 61
Fat-hen
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 4,271
Fatfoot Pocket-moss
- Group
- Mosses
- Peak month
- August
- Records since 2000
- 817
Fatsia
- Group
- Flowering plants
- Peak month
- March
- Records since 2000
- 95
Favolaschia claudopus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 159
Favorinus blianus
- Group
- Molluscs
- Peak month
- June
- Records since 2000
- 98
Favorinus branchialis
- Group
- Molluscs
- Peak month
- June
- Records since 2000
- 160
Feather bryozoan
- Group
- Bryozoans
- Peak month
- July
- Records since 2000
- 3,209
Feathered Gothic
- Group
- Butterflies and moths
- Peak month
- September
- Records since 2000
- 545
Feathered ranunculus
- Group
- Butterflies and moths
- Peak month
- October
- Records since 2000
- 175
Feathered Thorn
- Group
- Butterflies and moths
- Peak month
- October
- Records since 2000
- 2,337
Feathery Bog-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 5,044
Fecampia erythrocephala
- Group
- Flatworms
- Peak month
- June
- Records since 2000
- 160
Feline calicivirus
- Group
- Microorganisms and protists
- Peak month
- November
- Records since 2000
- 393
Felipes leucopellaeus
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 155
Fellhaneropsis vezdae
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 74
Felt lichen
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 392
Felt lichen
- Group
- Lichens
- Peak month
- April
- Records since 2000
- 323
Fen Bedstraw
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 986
Fen Orchid
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 89
Fen Pondweed
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 185
Fen Raft Spider
- Group
- Spiders
- Peak month
- August
- Records since 2000
- 201
Fen Snout
- Group
- True flies
- Peak month
- July
- Records since 2000
- 595
Fenella nigrita
- Group
- Bees, wasps and ants
- Peak month
- September
- Records since 2000
- 139
Fenestrulina delicia
- Group
- Bryozoans
- Peak month
- September
- Records since 2000
- 77
Fenestrulina malusii
- Group
- Bryozoans
- Peak month
- May
- Records since 2000
- 870
Fennel
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 1,899
Fennel Pondweed
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 825
Fenugreek milkcap
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 126
Fenusa ulmi
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 183
Fern
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 165
Fern-grass
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 933
Fern-leaf Yarrow
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 529
Fern-leaved Hook-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 12,557
Ferrissia californica
- Group
- Molluscs
- Peak month
- October
- Records since 2000
- 258
Ferruginous Bee-Grabber
- Group
- True flies
- Peak month
- July
- Records since 2000
- 5,065
Ferruginous Duck
- Group
- Birds
- Peak month
- January
- Records since 2000
- 2,039
Fervidicola ferrireducens
- Group
- Microorganisms and protists
- Peak month
- January
- Records since 2000
- 51
Festoon
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 204
Festuca altissima
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 61
Festuca fasciculata
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 105
Fever Fly
- Group
- True flies
- Peak month
- August
- Records since 2000
- 2,659
Feverfew
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 7,779
Few-flowered Garlic
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 1,920
Few-Flowered Sedge
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 178
Few-flowered Spike-rush
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 481
Fibrous Tussock-sedge
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 294
Fibrous Waxcap
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 485
Ficaria ambigua
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 484
Ficopomatus enigmaticus
- Group
- Worms (annelids)
- Peak month
- September
- Records since 2000
- 292
Fiddle Dock
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 213
Field Bindweed
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 9,669
Field cricket
- Group
- Grasshoppers and crickets
- Peak month
- May
- Records since 2000
- 61
Field Cuckoo Bee
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 1,191
Field Damsel Bug
- Group
- True bugs
- Peak month
- September
- Records since 2000
- 964
Field Digger Wasp
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 1,763
Field Dog-lichen
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 498
Field Fleawort
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 174
Field Forget-me-not
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 6,582
Field forklet moss
- Group
- Mosses
- Peak month
- October
- Records since 2000
- 5,362
Field Garlic
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 94
Field Gentian
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 1,232
Field Gromwell
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 70
Field hornwort
- Group
- Hornworts
- Peak month
- November
- Records since 2000
- 148
Field Horsetail
- Group
- Ferns and horsetails
- Peak month
- June
- Records since 2000
- 9,954
Field Madder
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 2,508
Field Maple
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 19,098
Field Mouse-ear
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 383
Field Mushroom
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 859
Field Pansy
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 2,990
Field Penny-cress
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 662
Field Pepperwort
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 216
Field Scabious
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 4,209
Field vole
- Group
- Mammals
- Peak month
- August
- Records since 2000
- 3,284
Field Wood-rush
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 9,310
Field Woundwort
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 437
Field-rose
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 3,485
Fieldfare
- Group
- Birds
- Peak month
- January
- Records since 2000
- 138,324
Fiery Milkcap
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 542
Fig
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 1,462
Fig Gall
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 565
Fig sponge
- Group
- Sponges
- Peak month
- September
- Records since 2000
- 1,827
Fig-leaved Goosefoot
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 534
Figularia figularis
- Group
- Bryozoans
- Peak month
- January
- Records since 2000
- 122
Figure of eight
- Group
- Butterflies and moths
- Peak month
- October
- Records since 2000
- 233
Figure of Eighty
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 942
Figwort sawfly
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 993
Figwort Weevil
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 1,873
Filbert
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 250
Filefish
- Group
- Fish
- Peak month
- September
- Records since 2000
- 120
Filellum serpens
- Group
- Jellyfish, corals and anemones
- Peak month
- July
- Records since 2000
- 66
Fimbriosthenelais minor
- Group
- Worms (annelids)
- Peak month
- September
- Records since 2000
- 105
Fimbriosthenelais zetlandica
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 341
Fin Whale
- Group
- Mammals
- Peak month
- October
- Records since 2000
- 142
Fine Bog-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 692
Fine Distichium
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 470
Fine feather-hydroid
- Group
- Jellyfish, corals and anemones
- Peak month
- July
- Records since 2000
- 1,146
Fine Streaked Bugkin
- Group
- True bugs
- Peak month
- May
- Records since 2000
- 1,210
Fine-leaved Leskea
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 549
Fine-leaved Sheep's-fescue
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 323
Fine-leaved Water-dropwort
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 284
Fine-lined Pea Mussel
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 387
Finestem needlegrass
- Group
- Flowering plants
- Peak month
- October
- Records since 2000
- 85
Finger-scale foam lichen
- Group
- Lichens
- Peak month
- September
- Records since 2000
- 329
Fingered Cowlwort
- Group
- Liverworts
- Peak month
- March
- Records since 2000
- 1,850
Fingered Sedge
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 115
Fir Clubmoss
- Group
- Clubmosses
- Peak month
- July
- Records since 2000
- 1,562
Fir Clubmoss
- Group
- Clubmosses
- Peak month
- July
- Records since 2000
- 305
Fir tamarisk-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 324
Fir-Fireweed rust
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 459
Fire bug
- Group
- True bugs
- Peak month
- September
- Records since 2000
- 582
Firecrest
- Group
- Birds
- Peak month
- October
- Records since 2000
- 33,295
Firedot Lichen
- Group
- Lichens
- Peak month
- August
- Records since 2000
- 457
Firethorn
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 1,712
Firethorn Leaf Miner
- Group
- Butterflies and moths
- Peak month
- October
- Records since 2000
- 842
Fireweed
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 17,268
Fireworks anemone
- Group
- Jellyfish, corals and anemones
- Peak month
- August
- Records since 2000
- 437
Fish Leech
- Group
- Worms (annelids)
- Peak month
- October
- Records since 2000
- 6,917
Fishscale lichen
- Group
- Lichens
- Peak month
- November
- Records since 2000
- 55
Fissidens crispus
- Group
- Mosses
- Peak month
- February
- Records since 2000
- 174
Fissidens moss
- Group
- Mosses
- Peak month
- September
- Records since 2000
- 305
Fissidens rufulus
- Group
- Mosses
- Peak month
- August
- Records since 2000
- 100
Fistulina hepatica
- Group
- Fungi
- Records since 2000
- 52
- NBN Atlas records since 2000
- 926
Five-ranked Bog-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 2,283
Five-Spot Ladybird
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 359
Five-spotted Club-horned Wasp
- Group
- Bees, wasps and ants
- Peak month
- May
- Records since 2000
- 578
Fivebeard rockling
- Group
- Fish
- Peak month
- February
- Records since 2000
- 1,563
Fixsenia pruni
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 738
Flabby bristle-worm
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 799
Flag-moss
- Group
- Mosses
- Peak month
- August
- Records since 2000
- 73
Flagellate Feather-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 4,162
Flagelloscypha minutissima
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 129
Flame
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 5,379
Flame Carpet
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 5,167
Flame Shell
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 994
Flame Shoulder
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 12,865
Flame Wainscot
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 124
Flaming Cowgirls
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 1,891
Flamingo moss
- Group
- Mosses
- Peak month
- December
- Records since 2000
- 89
Flammula alnicola
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 109
Flammulaster carpophilus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 113
Flammulaster muricatus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 56
Flat Fruited Pelt
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 1,044
Flat grain beetle
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 90
Flat Neckera
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 7,833
Flat periwinkle
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 728
Flat Ramshorn
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 1,058
Flat Top Shell
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 4,533
Flat Valve Snail
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 1,093
Flat-backed millipede
- Group
- Millipedes
- Peak month
- June
- Records since 2000
- 305
Flat-brocade Moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 448
Flat-rock Grimmia
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 95
Flat-sedge
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 80
Flat-stalked Pondweed
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 99
Flat-topped Bog-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 9,453
Flattened Meadow-grass
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 210
Flavihumibacter solisilvae
- Group
- Microorganisms and protists
- Peak month
- January
- Records since 2000
- 143
Flavoplaca arcis
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 677
Flavoplaca austrocitrina
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 361
Flavoplaca dichroa
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 851
Flavoplaca flavocitrina
- Group
- Lichens
- Peak month
- August
- Records since 2000
- 4,586
Flavoplaca granulosa
- Group
- Lichens
- Peak month
- February
- Records since 2000
- 61
Flavoplaca limonia
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 548
Flavoplaca maritima
- Group
- Lichens
- Peak month
- August
- Records since 2000
- 145
Flavoplaca microthallina
- Group
- Lichens
- Peak month
- August
- Records since 2000
- 186
Flavoplaca oasis
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 3,159
Flavoplaca polycarpa
- Group
- Lichens
- Peak month
- September
- Records since 2000
- 416
Flavous Nomad Bee
- Group
- Bees, wasps and ants
- Peak month
- May
- Records since 2000
- 1,383
Flax Flea Beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 712
Flea Sedge
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 2,272
Flecked General
- Group
- True flies
- Peak month
- July
- Records since 2000
- 835
Flecked Snout
- Group
- True flies
- Peak month
- July
- Records since 2000
- 1,002
Flectobacillus major
- Group
- Microorganisms and protists
- Peak month
- January
- Records since 2000
- 113
Flesh sponge
- Group
- Sponges
- Peak month
- July
- Records since 2000
- 1,955
Fleshy horny sponge
- Group
- Sponges
- Peak month
- August
- Records since 2000
- 1,286
Fleutiauxellus maritimus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 112
Flexuose Cleftclam
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 11,473
Flexuous Bog-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 855
Flixweed
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 165
Floating Bur-reed
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 152
Floating Club-rush
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 236
Floating Crystalwort
- Group
- Liverworts
- Peak month
- August
- Records since 2000
- 554
Floating Hook-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 983
Floating Pennywort
- Group
- Flowering plants
- Peak month
- September
- Records since 2000
- 2,498
Floating Sweet-grass
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 4,022
Floating Water-Plantain
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 98
Floerkea's phascum moss
- Group
- Mosses
- Peak month
- November
- Records since 2000
- 255
Floodwater Mosquito
- Group
- True flies
- Peak month
- August
- Records since 2000
- 101
Florida beard lichen
- Group
- Lichens
- Peak month
- October
- Records since 2000
- 525
Florodelphax leptosoma
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 100
Floronia bucculenta
- Group
- Spiders
- Peak month
- August
- Records since 2000
- 131
Flossflower
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 480
Flounced chestnut
- Group
- Butterflies and moths
- Peak month
- September
- Records since 2000
- 126
Flounced Rustic
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 6,401
Flower of an hour
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 83
Flowering Currant
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 4,952
Flowering quince
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 80
Flowering-rush
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 1,341
Fluffy Dust Lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 3,067
Fluted bird's nest
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 314
Fly
- Group
- True flies
- Peak month
- June
- Records since 2000
- 1,907
Fly
- Group
- True flies
- Peak month
- June
- Records since 2000
- 1,130
Fly
- Group
- True flies
- Peak month
- October
- Records since 2000
- 1,038
Fly Agaric
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 5,077
Fly Orchid
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 389
Flying Crab
- Group
- Crustaceans
- Peak month
- August
- Records since 2000
- 3,505
Foliaceous Lace Bug
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 174
Fomitiporia hippophaicola
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 52
Fomitopsis pinicola
- Group
- Fungi
- Peak month
- November
- Records since 2000
- 155
Fomoria septembrella
- Group
- Butterflies and moths
- Peak month
- September
- Records since 2000
- 210
Fool's Funnel
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 844
Fool's Parsley
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 1,545
Fool's Water-cress
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 4,038
Football Ascidian
- Group
- Sea squirts
- Peak month
- July
- Records since 2000
- 827
Forbes' glory-of-the-snow
- Group
- Flowering plants
- Peak month
- March
- Records since 2000
- 185
Forcipata citrinella
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 57
Forcipated Pincerwort
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 1,689
Forcipomyia aristolochiae
- Group
- True flies
- Peak month
- August
- Records since 2000
- 110
Forcipomyia bipunctata
- Group
- True flies
- Peak month
- September
- Records since 2000
- 198
Forcipomyia nigra
- Group
- True flies
- Peak month
- May
- Records since 2000
- 77
Forcipomyia squamigera
- Group
- True flies
- Peak month
- May
- Records since 2000
- 60
Forcipomyia tenuis
- Group
- True flies
- Peak month
- July
- Records since 2000
- 182
Forcipomyia titillans
- Group
- True flies
- Peak month
- May
- Records since 2000
- 165
Foreign grain beetle
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 62
Forest Bug
- Group
- True bugs
- Peak month
- August
- Records since 2000
- 21,188
Forester
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 213
Forget-me-not Shieldbug
- Group
- True bugs
- Peak month
- May
- Records since 2000
- 1,117
Fork Tailed Flower Bee
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 1,111
Fork-tailed Swift
- Group
- Birds
- Peak month
- June
- Records since 2000
- 84
Forked ribbons
- Group
- Seaweeds and algae
- Peak month
- January
- Records since 2000
- 8,016
Forked Spleenwort
- Group
- Ferns and horsetails
- Peak month
- April
- Records since 2000
- 65
Forked Veilwort
- Group
- Liverworts
- Peak month
- March
- Records since 2000
- 24,734
Formica cunicularia
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 498
Formica lemani
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 1,879
Forster's Tern
- Group
- Birds
- Peak month
- August
- Records since 2000
- 341
Fossombronia caespitiformis
- Group
- Liverworts
- Peak month
- March
- Records since 2000
- 197
Fossombronia incurva
- Group
- Liverworts
- Peak month
- September
- Records since 2000
- 233
Fossombronia maritima
- Group
- Liverworts
- Peak month
- April
- Records since 2000
- 74
Fountain Apple-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 6,751
Fountain Feather-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 1,402
Fountain Smoothcap
- Group
- Mosses
- Peak month
- August
- Records since 2000
- 524
Four o'Clock flower
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 352
Four-barred Knapweed Gall Fly
- Group
- True flies
- Peak month
- July
- Records since 2000
- 215
Four-barred Major
- Group
- True flies
- Peak month
- July
- Records since 2000
- 834
Four-Colored Cuckoo-Bee
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 3,040
Four-dotted Footman
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 502
Four-leaved Allseed
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 221
Four-leaved Pink-sorrel
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 879
Four-lined Polycera
- Group
- Molluscs
- Peak month
- July
- Records since 2000
- 1,471
Four-spot Ladybird [Harmonia quadripunctata]
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 2,301
Four-spot megrim
- Group
- Fish
- Peak month
- November
- Records since 2000
- 841
Four-spotted Chaser
- Group
- Dragonflies and damselflies
- Peak month
- June
- Records since 2000
- 79,037
Four-spotted cranefly
- Group
- True flies
- Peak month
- June
- Records since 2000
- 2,050
Four-spotted footman
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 358
Four-spotted Ground Beetle
- Group
- Beetles
- Peak month
- April
- Records since 2000
- 1,480
Four-spotted Nephus
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 1,665
Four-striated riverbank ground beetle
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 1,278
Fourbeard rockling
- Group
- Fish
- Peak month
- August
- Records since 2000
- 6,440
Fourspot Sedgesitter
- Group
- True flies
- Peak month
- June
- Records since 2000
- 1,424
Fox Moth
- Group
- Butterflies and moths
- Peak month
- September
- Records since 2000
- 2,079
Fox-tail Feather-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 14,679
Foxglove
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 17,704
Foxglove aphid
- Group
- True bugs
- Peak month
- May
- Records since 2000
- 53
Foxglove Pug
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 2,256
Foxglove-tree
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 879
Foxtail barley
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 55
Foxtail stonewort
- Group
- Seaweeds and algae
- Peak month
- July
- Records since 2000
- 211
Fragilaria bidens
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 427
Fragilaria capucina
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,037
Fragilaria capucina
- Group
- Seaweeds and algae
- Peak month
- April
- Records since 2000
- 65
Fragilaria construens
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 93
Fragilaria elliptica
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 101
Fragilaria gracilis
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 1,679
Fragilaria pararumpens
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 193
Fragilaria pectinalis
- Group
- Seaweeds and algae
- Peak month
- April
- Records since 2000
- 114
Fragilaria perminuta
- Group
- Seaweeds and algae
- Peak month
- April
- Records since 2000
- 126
Fragilaria recapitellata
- Group
- Seaweeds and algae
- Peak month
- April
- Records since 2000
- 187
Fragilaria rumpens
- Group
- Seaweeds and algae
- Peak month
- May
- Records since 2000
- 163
Fragilaria tenera
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 285
Fragilaria tenera
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 62
Fragilariforma virescens
- Group
- Seaweeds and algae
- Peak month
- October
- Records since 2000
- 276
Fragile beard lichen
- Group
- Lichens
- Peak month
- April
- Records since 2000
- 277
Fragile Brittlegill
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 801
Fragrant Agrimony
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 158
Fragrant Funnel
- Group
- Fungi
- Peak month
- November
- Records since 2000
- 1,560
Fragrant Orchid
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 938
Franchet's Cotoneaster
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 1,442
Franklin's Gull
- Group
- Birds
- Peak month
- July
- Records since 2000
- 355
Freiberg's Screw-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 823
French Crane's-bill
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 1,083
French rose
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 88
Freshwater Nerite
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 3,393
Freshwater White-clawed Crayfish
- Group
- Crustaceans
- Peak month
- September
- Records since 2000
- 4,536
Freyer's Pug Moth
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 892
Fried egg nudibranch
- Group
- Molluscs
- Peak month
- June
- Records since 2000
- 894
Friedländer's Bacillus
- Group
- Microorganisms and protists
- Peak month
- October
- Records since 2000
- 1,860
Fries' dotted lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 65
Fries’ goby
- Group
- Fish
- Peak month
- October
- Records since 2000
- 1,516
Frigate tuna
- Group
- Fish
- Peak month
- December
- Records since 2000
- 506
Fringecups
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 2,128
Fringed Bog-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 5,005
Fringed candle snuffer moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 140
Fringed Hoar-moss
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 102
Fringed Loosestrife
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 979
Fringed Rosette Lichen
- Group
- Lichens
- Peak month
- April
- Records since 2000
- 7,846
Fringed Water-lily
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 623
Frit Fly
- Group
- True flies
- Peak month
- July
- Records since 2000
- 556
Fritillary
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 2,254
Frizzled Crisp-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 5,214
Frizzled Pincushion
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 11,282
Frog Orchid
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 717
Frogbit
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 1,205
Frogbit Smut
- Group
- Fungi
- Peak month
- July
- Records since 2000
- 64
Froghopper
- Group
- True bugs
- Peak month
- May
- Records since 2000
- 6,233
Frommeella tormentillae
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 86
Frond-Aeolis
- Group
- Molluscs
- Peak month
- June
- Records since 2000
- 539
Frosted Green
- Group
- Butterflies and moths
- Peak month
- April
- Records since 2000
- 728
Frosted lichen
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 289
Frosted Orache
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 393
Frosted Orange
- Group
- Butterflies and moths
- Peak month
- September
- Records since 2000
- 1,040
Frosty Bonnet
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 1,035
Frosty-rimmed Dot Lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 537
Fruit fly
- Group
- True flies
- Peak month
- August
- Records since 2000
- 722
Fruit fly
- Group
- True flies
- Peak month
- September
- Records since 2000
- 56
Frullania microphylla
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 278
Frustulia crassinveria
- Group
- Seaweeds and algae
- Peak month
- April
- Records since 2000
- 55
Frustulia erifuga
- Group
- Seaweeds and algae
- Peak month
- May
- Records since 2000
- 72
Frustulia rhomboides
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 242
Frustulia saxonica
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 169
Frustulia vulgaris
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 100
Fucellia maritima
- Group
- True flies
- Peak month
- August
- Records since 2000
- 132
Fucellia tergina
- Group
- True flies
- Peak month
- June
- Records since 2000
- 139
Fuchsia
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 1,772
Fulvous Duck
- Group
- Birds
- Peak month
- May
- Records since 2000
- 116
Funck's rustwort
- Group
- Liverworts
- Peak month
- August
- Records since 2000
- 200
Funeral Bell
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 599
Funnel Chanterelle
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 581
Furbelows
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 2,637
Furcate Dung Fly
- Group
- True flies
- Peak month
- June
- Records since 2000
- 1,807
Furcula bicuspis
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 109
Furcula bifida
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 188
Furniture Beetle
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 776
Furrow Orbweaver
- Group
- Spiders
- Peak month
- June
- Records since 2000
- 994
Furrowed nutclam
- Group
- Molluscs
- Peak month
- June
- Records since 2000
- 1,404
Furry bryozoan
- Group
- Bryozoans
- Peak month
- June
- Records since 2000
- 3,542
Furry Dronefly
- Group
- True flies
- Peak month
- August
- Records since 2000
- 5,653
Furry-claspered Furrow Bee
- Group
- Bees, wasps and ants
- Peak month
- May
- Records since 2000
- 527
Fusarium oxysporum
- Group
- Fungi
- Peak month
- January
- Records since 2000
- 57
Fuscidea gothoburgensis
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 70
Fuscidea lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 1,569
Fuscidea lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 191
Fuscidea lichen
- Group
- Lichens
- Peak month
- September
- Records since 2000
- 184
Fuscidea lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 147
Fuscidea lightfootii
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 2,354
Fuscocephaloziopsis albescens
- Group
- Liverworts
- Peak month
- August
- Records since 2000
- 57
Fuscocephaloziopsis catenulata
- Group
- Liverworts
- Peak month
- February
- Records since 2000
- 297
Fuscocephaloziopsis leucantha
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 106
Fuscocephaloziopsis loitlesbergeri
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 103
Fuscocephaloziopsis macrostachya
- Group
- Liverworts
- Peak month
- November
- Records since 2000
- 165
Fuscocephaloziopsis pleniceps
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 227
Fuscopannaria mediterranea
- Group
- Lichens
- Peak month
- March
- Records since 2000
- 266
Fuscopannaria nebulosa
- Group
- Lichens
- Peak month
- November
- Records since 2000
- 121
Fuscoporia ferruginosa
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 445
Fused Rim-lichen
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 1,779
Fusoidiella depressa
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 61
Fuzzy Onchidoris
- Group
- Molluscs
- Peak month
- July
- Records since 2000
- 556