Dunlin Calidris alpina

Most widespread and abundant wader found on estuaries

Habitat: marshes, estuaries, shores and moors

Widespread and common wader; winters in S. Britain and breeds in N. Britain

Summer: black belly, chestnut and black upperparts; winter: pale grey above, white below; medium black bill

Feeds busily in hunched-up posture, forming enormous flocks

Eats crustaceans, molluscs; in flight has white wingbar

Nest is a hollow on ground

1 Brood May to June; 4 eggs greenish, blotched brown