Facts
- Records since 2000
- 28,846
- Species recorded
- 1,629
- Area
- 137 km²
- Population
- 154,739 (21 March 2021)
- 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 Q880782
Most recorded species in Blackburn with Darwen
| # | Species | Group | Peak month | Records here |
|---|---|---|---|---|
| 1 | Common Wood-Pigeon Columba palumbus | Birds | April | 746 |
| 2 | Eurasian Magpie Pica pica | Birds | April | 735 |
| 3 | European Robin Erithacus rubecula | Birds | April | 733 |
| 4 | Carrion Crow Corvus corone | Birds | April | 712 |
| 5 | Eurasian Blackbird Turdus merula | Birds | May | 673 |
| 6 | Black-headed Gull Chroicocephalus ridibundus | Birds | January | 653 |
| 7 | Eurasian Blue Tit Cyanistes caeruleus | Birds | April | 644 |
| 8 | Great Tit Parus major | Birds | April | 629 |
| 9 | House Sparrow Passer domesticus | Birds | May | 525 |
| 10 | Black Darter Sympetrum danae | Dragonflies and damselflies | August | 523 |
| 11 | Eurasian Wren Troglodytes troglodytes | Birds | April | 519 |
| 12 | Dunnock Prunella modularis | Birds | April | 502 |
| 13 | Western Jackdaw Coloeus monedula | Birds | May | 454 |
| 14 | Common Hawker Aeshna juncea | Dragonflies and damselflies | August | 441 |
| 15 | Coal Tit Periparus ater | Birds | January | 424 |
| 16 | Eurasian Collared-Dove Streptopelia decaocto | Birds | May | 362 |
| 17 | Song Thrush Turdus philomelos | Birds | May | 338 |
| 18 | Large Red Damselfly Pyrrhosoma nymphula | Dragonflies and damselflies | May | 328 |
| 19 | Long-tailed Tit Aegithalos caudatus | Birds | January | 328 |
| 20 | Emerald Damselfly Lestes sponsa | Dragonflies and damselflies | August | 300 |
| 21 | Mallard Anas platyrhynchos | Birds | April | 296 |
| 22 | European Goldfinch Carduelis carduelis | Birds | April | 278 |
| 23 | European Starling Sturnus vulgaris | Birds | May | 278 |
| 24 | Rock Pigeon Columba livia | Birds | April | 273 |
| 25 | Common Chaffinch Fringilla coelebs | Birds | April | 255 |
| 26 | Canada Goose (canadensis Group) Branta canadensis | Birds | April | 245 |
| 27 | Common Chiffchaff Phylloscopus collybita | Birds | April | 244 |
| 28 | Herring Gull Larus argentatus | Birds | April | 237 |
| 29 | Lesser Black-backed Gull Larus fuscus | Birds | August | 236 |
| 30 | Indian Balsam Impatiens glandulifera | Flowering plants | August | 235 |
| 31 | Lustrous Bog-moss Sphagnum subnitens | Mosses | July | 229 |
| 32 | Common Darter Sympetrum striolatum | Dragonflies and damselflies | August | 222 |
| 33 | Brown Hawker Aeshna grandis | Dragonflies and damselflies | July | 210 |
| 34 | Common Blue Damselfly Enallagma cyathigerum | Dragonflies and damselflies | June | 210 |
| 35 | Four-spotted Chaser Libellula quadrimaculata | Dragonflies and damselflies | June | 180 |
| 36 | Eurasian Blackcap Sylvia atricapilla | Birds | May | 180 |
| 37 | Eurasian Kestrel Falco tinnunculus | Birds | October | 178 |
| 38 | Cross-leaved Heath Erica tetralix | Flowering plants | July | 177 |
| 39 | Azure Damselfly Coenagrion puella | Dragonflies and damselflies | June | 176 |
| 40 | Common Buzzard Buteo buteo | Birds | April | 174 |
| 41 | Blunt-leaved Bog-moss Sphagnum palustre | Mosses | July | 174 |
| 42 | Eurasian Jay Garrulus glandarius | Birds | October | 172 |
| 43 | Eurasian Nuthatch Sitta europaea | Birds | April | 171 |
| 44 | Common Swift Apus apus | Birds | June | 169 |
| 45 | Goldcrest Regulus regulus | Birds | October | 157 |
| 46 | Blue-tailed Damselfly Ischnura elegans | Dragonflies and damselflies | June | 156 |
| 47 | Papillose Bog-moss Sphagnum papillosum | Mosses | July | 131 |
| 48 | Fringed Bog-moss Sphagnum fimbriatum | Mosses | July | 117 |
| 49 | Ring-necked Pheasant Phasianus colchicus | Birds | April | 117 |
| 50 | Rose-ringed Parakeet Psittacula krameri | Birds | April | 116 |
| 51 | Emperor dragonfly Anax imperator | Dragonflies and damselflies | July | 116 |
| 52 | Northern Lapwing Vanellus vanellus | Birds | May | 114 |
| 53 | Eurasian Bullfinch Pyrrhula pyrrhula | Birds | January | 111 |
| 54 | White Wagtail Motacilla alba | Birds | April | 110 |
| 55 | Willow Warbler Phylloscopus trochilus | Birds | April | 109 |
| 56 | Broad-bodied Chaser Libellula depressa | Dragonflies and damselflies | June | 106 |
| 57 | Common Pipistrelle Pipistrellus pipistrellus | Mammals | July | 103 |
| 58 | European Greenfinch Chloris chloris | Birds | April | 103 |
| 59 | European roe deer Capreolus capreolus | Mammals | May | 100 |
| 60 | Southern Hawker Aeshna cyanea | Dragonflies and damselflies | August | 99 |