Hart's Tongue Fern Rust
- Group
- Fungi
- Records since 2000
- 557
- Scientific name
- Milesina scolopendrii
Duck Mussel
- Group
- Molluscs
- Records since 2000
- 550
- Scientific name
- Anodonta anatina
Parasyrphus punctulatus
- Group
- True flies
- Records since 2000
- 549
- Peak month
- April
Hypotrachyna lichen
- Group
- Lichens
- Records since 2000
- 548
- Scientific name
- Hypotrachyna revoluta
Longjaw Ground-beetle
- Group
- Beetles
- Records since 2000
- 547
- Scientific name
- Stomis pumicatus
Bearded Pawwort
- Group
- Liverworts
- Records since 2000
- 545
- Scientific name
- Barbilophozia barbata
Holly pins
- Group
- Fungi
- Records since 2000
- 540
- Scientific name
- Stenocybe septata
Northern Goshawk
- Group
- Birds
- Records since 2000
- 538
- Scientific name
- Accipiter gentilis
Azalea bud blast
- Group
- Fungi
- Records since 2000
- 534
- Scientific name
- Seifertia azaleae
Dog's Mercury Rust
- Group
- Fungi
- Records since 2000
- 532
- Scientific name
- Melampsora populnea
Stenothoe monoculoides
- Group
- Crustaceans
- Records since 2000
- 532
- Peak month
- April
Pine Beauty
- Group
- Butterflies and moths
- Records since 2000
- 531
- Scientific name
- Panolis flammea
Western Hemlock
- Group
- Conifers
- Records since 2000
- 531
- Scientific name
- Tsuga heterophylla
Bitter Chocolate Rust
- Group
- Fungi
- Records since 2000
- 526
- Scientific name
- Uromyces ficariae
Potamophylax rotundipennis
- Group
- Caddisflies
- Records since 2000
- 525
- Peak month
- April
Palloptera scutellata
- Group
- True flies
- Records since 2000
- 523
- Peak month
- April
Bluebell rust
- Group
- Fungi
- Records since 2000
- 522
- Scientific name
- Uromyces hyacinthi
Lypha dubia
- Group
- True flies
- Records since 2000
- 522
- Peak month
- April
Calloria tremelloides
- Group
- Fungi
- Records since 2000
- 516
- Peak month
- April
Hydroporus melanarius
- Group
- Beetles
- Records since 2000
- 515
- Peak month
- April
Tephrochlamys rufiventris
- Group
- True flies
- Records since 2000
- 512
- Peak month
- April
Black Kite
- Group
- Birds
- Records since 2000
- 511
- Scientific name
- Milvus migrans
Common Cornsalad
- Group
- Flowering plants
- Records since 2000
- 511
- Scientific name
- Valerianella locusta
Winter Polypore
- Group
- Fungi
- Records since 2000
- 503
- Scientific name
- Lentinus brumalis
Swan Mussel
- Group
- Molluscs
- Records since 2000
- 499
- Scientific name
- Anodonta cygnea
Quercus rosacea
- Group
- Flowering plants
- Records since 2000
- 496
- Peak month
- April
Boeremia hedericola
- Group
- Fungi
- Records since 2000
- 494
- Peak month
- April
Little Tree Worm
- Group
- Worms (annelids)
- Records since 2000
- 492
- Scientific name
- Satchellius mammalis
Blackberry
- Group
- Flowering plants
- Records since 2000
- 486
- Scientific name
- Rubus fruticosus
Ficaria ambigua
- Group
- Flowering plants
- Records since 2000
- 484
- Peak month
- April
Bay
- Group
- Flowering plants
- Records since 2000
- 481
- Scientific name
- Laurus nobilis
Garden Grape-hyacinth
- Group
- Flowering plants
- Records since 2000
- 479
- Scientific name
- Muscari armeniacum
Navicula permitis
- Group
- Seaweeds and algae
- Records since 2000
- 476
- Peak month
- April
Celandine Clustercup Rust
- Group
- Fungi
- Records since 2000
- 474
- Scientific name
- Uromyces dactylidis
Rock-loving Map Lichen
- Group
- Lichens
- Records since 2000
- 465
- Scientific name
- Rhizocarpon petraeum
Blue-grey Worm
- Group
- Worms (annelids)
- Records since 2000
- 463
- Scientific name
- Octolasion cyaneum
Golden Eagle
- Group
- Birds
- Records since 2000
- 463
- Scientific name
- Aquila chrysaetos
Kentish Glory
- Group
- Butterflies and moths
- Records since 2000
- 463
- Scientific name
- Endromis versicolora
Horned delphacid
- Group
- True bugs
- Records since 2000
- 461
- Scientific name
- Asiraca clavicornis
Gonia picea
- Group
- True flies
- Records since 2000
- 460
- Peak month
- April
Darwin's barberry
- Group
- Flowering plants
- Records since 2000
- 454
- Scientific name
- Berberis darwinii
Blindiadelphus recurvatus
- Group
- Mosses
- Records since 2000
- 452
- Peak month
- April
Electrogena lateralis
- Group
- Mayflies
- Records since 2000
- 452
- Peak month
- April
Euphorbia mellifera
- Group
- Flowering plants
- Records since 2000
- 452
- Peak month
- April
Little Mouse-ear
- Group
- Flowering plants
- Records since 2000
- 452
- Scientific name
- Cerastium semidecandrum
Sand lizard
- Group
- Reptiles
- Records since 2000
- 450
- Scientific name
- Lacerta agilis
Nartus grapii
- Group
- Beetles
- Records since 2000
- 449
- Peak month
- April
Blue Ling
- Group
- Fish
- Records since 2000
- 442
- Scientific name
- Molva dypterygia