Anser ferus Grey-lag Goose Rare Anser segetum Bean Goose Common Bernicla leucopsis Bernicle Goose Common Cygnus ferus Whistling Swan Rare Tadorna vulpanser Common Shieldrake Common Mergus Castor Goosander Rare Anas boschas Mallard Common Querquedula Crecca Common Teal Common Spatula clypeata Shoveller Duck Rare Moreca Penelope Common Wigeon Common Myroca Terina Common Pochard Rather rare Margellus albellus Smew Occasional visitor Fuligula cristata Tufted Duck or Pochard Rather common Fuligula marila Scaup Duck or Pochard Rather rare Oidemia fusca Velvet Scoter Rare Oidemia nigra Black Scoter Very rare Clangula vulgaris Golden-eye Duck or Garrot Rather common Clangula albeola Buffel-headed Duck Common COLYMBIDÆ OR DIVER FAMILY. Colymbus glacialis Great Northern Diver Very rare Colymbus arcticus Black-throated Diver Rare Colymbus septentrionalis Red-throated Diver Rather common Chaulelasmus strepera Gadwall Very rare Podiceps minor Little Grebe Common ALCIDÆ OR AUK FAMILY. Fratercula artica Puffin Common Alca torda Razor-bill Rare Uria Troile Common Guillemot Rare PROCELLARIDÆ OR PETREL FAMILY. Thalassidroma pelagica Stormy Petrel Common Thalassidroma Leachii Fork-tailed Petrel Rather rare LARIDÆ OR GULL FAMILY. Larus canus Common Gull Very common Larus ribibundus Black-headed Gull Very common Larus fuscus Little Black-headed Gull Common Larus tridactylus Kittiwake Gull Very common Larus Glaucus Glaucus Gull Rare Larus argentatus Herring Gull Very common Sterna hirundo Sea-swallow or Tern Common Sterna fuliginosa Sooty Tern Rare Sterna minuta Lesser Tern Common PELECANIDÆ OR PELICAN FAMILY. Graculus Carbo Common Cormorant Common Graculus Cristata Crested Cormorant Rather rare Sula Bassanea Gannet or Solan Goose Common