Facts
- Records since 2000
- 405,646
- Species recorded
- 4,681
- Area
- 704.2 km²
- Population
- 162,215 (1 January 2022)
- Nation
- England
- Type of area
- Unitary Authority
Sources: GBIF occurrence data (CC0 / CC BY), JNCC Taxon Designations (OGL), NBN Atlas (open licences), Wikidata (CC0) · Wikidata Q1473780
Most recorded species in West Berkshire
| # | Species | Group | Peak month | Records here |
|---|---|---|---|---|
| 1 | Meadow Brown Maniola jurtina | Butterflies and moths | July | 8,045 |
| 2 | Lesser Black-backed Gull Larus fuscus | Birds | August | 7,581 |
| 3 | Gatekeeper Pyronia tithonus | Butterflies and moths | July | 4,566 |
| 4 | Common Wood-Pigeon Columba palumbus | Birds | April | 4,476 |
| 5 | European Robin Erithacus rubecula | Birds | April | 4,198 |
| 6 | Eurasian Blackbird Turdus merula | Birds | May | 4,066 |
| 7 | Eurasian Blue Tit Cyanistes caeruleus | Birds | April | 4,026 |
| 8 | Red Kite Milvus milvus | Birds | April | 3,890 |
| 9 | Common Blue Polyommatus icarus | Butterflies and moths | August | 3,683 |
| 10 | Ringlet Aphantopus hyperantus | Butterflies and moths | July | 3,583 |
| 11 | Small White Pieris rapae | Butterflies and moths | August | 3,540 |
| 12 | Large Yellow Underwing Noctua pronuba | Butterflies and moths | August | 3,313 |
| 13 | Great Tit Parus major | Birds | April | 3,275 |
| 14 | Speckled Wood Pararge aegeria | Butterflies and moths | August | 3,269 |
| 15 | Brimstone Moth Opisthograptis luteolata | Butterflies and moths | August | 3,228 |
| 16 | Willow Beauty Peribatodes rhomboidaria | Butterflies and moths | August | 3,078 |
| 17 | Large White Pieris brassicae | Butterflies and moths | July | 3,009 |
| 18 | Carrion Crow Corvus corone | Birds | April | 2,952 |
| 19 | Eurasian Wren Troglodytes troglodytes | Birds | April | 2,943 |
| 20 | Common Blue Damselfly Enallagma cyathigerum | Dragonflies and damselflies | June | 2,910 |
| 21 | Western Jackdaw Coloeus monedula | Birds | May | 2,801 |
| 22 | Eurasian Magpie Pica pica | Birds | April | 2,748 |
| 23 | Green-veined White Pieris napi | Butterflies and moths | July | 2,626 |
| 24 | Light Brown Apple Moth Epiphyas postvittana | Butterflies and moths | August | 2,557 |
| 25 | Riband Wave Idaea aversata | Butterflies and moths | July | 2,532 |
| 26 | Peacock Aglais io | Butterflies and moths | April | 2,410 |
| 27 | European Goldfinch Carduelis carduelis | Birds | April | 2,402 |
| 28 | Dunnock Prunella modularis | Birds | April | 2,347 |
| 29 | Common Chiffchaff Phylloscopus collybita | Birds | April | 2,346 |
| 30 | Marbled White Melanargia galathea | Butterflies and moths | July | 2,160 |
| 31 | Common Chaffinch Fringilla coelebs | Birds | April | 2,103 |
| 32 | Small Heath Coenonympha pamphilus | Butterflies and moths | June | 2,086 |
| 33 | Mallard Anas platyrhynchos | Birds | April | 2,048 |
| 34 | Brimstone Gonepteryx rhamni | Butterflies and moths | May | 2,021 |
| 35 | Shuttle-shaped Dart Agrotis puta | Butterflies and moths | August | 1,932 |
| 36 | Dark Arches Apamea monoglypha | Butterflies and moths | July | 1,919 |
| 37 | Garden Grass-veneer Chrysoteuchia culmella | Butterflies and moths | July | 1,909 |
| 38 | Common Buzzard Buteo buteo | Birds | April | 1,831 |
| 39 | Long-tailed Tit Aegithalos caudatus | Birds | January | 1,829 |
| 40 | Heart and Dart Agrotis exclamationis | Butterflies and moths | June | 1,778 |
| 41 | Song Thrush Turdus philomelos | Birds | May | 1,682 |
| 42 | Setaceous Hebrew Character Xestia c-nigrum | Butterflies and moths | August | 1,658 |
| 43 | Flame Shoulder Ochropleura plecta | Butterflies and moths | August | 1,603 |
| 44 | Common Darter Sympetrum striolatum | Dragonflies and damselflies | August | 1,601 |
| 45 | Canada Goose (canadensis Group) Branta canadensis | Birds | April | 1,585 |
| 46 | Lesser Broad Bordered Yellow Underwing Noctua janthe | Butterflies and moths | August | 1,569 |
| 47 | Ring-necked Pheasant Phasianus colchicus | Birds | April | 1,559 |
| 48 | Dingy Dowd Blastobasis adustella | Butterflies and moths | August | 1,555 |
| 49 | Pearl Veneer Agriphila straminella | Butterflies and moths | July | 1,469 |
| 50 | Square-spot Rustic Xestia xanthographa | Butterflies and moths | September | 1,469 |
| 51 | Eurasian Moorhen Gallinula chloropus | Birds | April | 1,451 |
| 52 | Black-headed Gull Chroicocephalus ridibundus | Birds | January | 1,451 |
| 53 | Eurasian Blackcap Sylvia atricapilla | Birds | May | 1,417 |
| 54 | Hebrew Character Orthosia gothica | Butterflies and moths | April | 1,358 |
| 55 | Brown House Moth Hofmannophila pseudospretella | Butterflies and moths | July | 1,338 |
| 56 | Mute Swan Cygnus olor | Birds | April | 1,328 |
| 57 | Great Cormorant/European Shag Phalacrocorax carbo | Birds | January | 1,312 |
| 58 | Blue-tailed Damselfly Ischnura elegans | Dragonflies and damselflies | June | 1,311 |
| 59 | Silver Y Autographa gamma | Butterflies and moths | July | 1,310 |
| 60 | Rook Corvus frugilegus | Birds | April | 1,310 |