Winter abundance change

Chaffinch Jay Little Owl Great Grey Shrike
Blackbird Coal Tit Merlin Little Egret
Woodpigeon Lesser Black-backed Gull Herring Gull Red-breasted Merganser
Robin Black-headed Gull Lesser Redpoll Red-crested Pochard
Blue Tit Linnet Pochard Ruddy Shelduck
Carrion Crow Sparrowhawk Raven Shelduck
Wren Treecreeper Water Rail Smew
Great Tit Nuthatch Woodcock Bewick's Swan
Jackdaw Green Woodpecker Green Sandpiper Bittern
Rook Red-legged Partridge Tree Sparrow Black Redstart
Magpie Marsh Tit Gadwall Cattle Egret
Dunnock Grey Heron Hen Harrier Cetti's Warbler
Starling Common Gull Peregrine Common Redpoll
Greenfinch Feral Pigeon Blackcap Common Sandpiper
Fieldfare Grey Wagtail Wigeon Crane
Pied Wagtail Mute Swan Willow Tit Dartford Warbler
House Sparrow Coot Shoveler Egyptian Goose
Pheasant Lapwing Red Kite Great Bustard
Song Thrush Reed Bunting Common Crossbill Great White Egret
Redwing Stonechat Goosander Greylag Goose
Buzzard Grey Partridge Goldeneye Hawfinch
Collared Dove Little Grebe Jack Snipe Long-eared Owl
Long-tailed Tit Corn Bunting Mandarin Duck Marsh Harrier
Mistle Thrush Canada Goose Pintail Mediterranean Gull
Goldcrest Cormorant Yellow-legged Gull Oystercatcher
Kestrel Golden Plover Barn Owl Ring Ouzel
Goldfinch Tufted Duck Curlew Ringed Plover
Skylark Teal Dipper Scaup
Yellowhammer Kingfisher Lesser Spotted Woodpecker Short-eared Owl
Stock Dove Siskin Redshank Waxwing
Bullfinch Snipe Ruddy Duck Whooper Swan
Meadow Pipit Brambling Black-tailed Godwit Woodlark
Great Spotted Woodpecker Chiffchaff Dunlin
Mallard Great Crested Grebe Firecrest
Moorhen Tawny Owl Great Black-backed Gull