123178 Greylag Goose Anser anser on nest. L 75-90cm. Largest Anser goose and only one that breeds in Britain. Feral populations confuse species’ wild status. Compared to other ‘grey’ geese, bulky and more uniformly grey-brown. Pink legs and heavy, pinkish orange bill help with identification. In flight, pale forewings, rump and tail contrast with darker flight feathers. Sexes are similar. Adult is greyish with dark lines on side of neck, barring on flanks and pale margins to back feathers. Bill is pale-tipped. Juvenile is more uniformly grey-brown than adult and bill lacks pale tip. Voice Utters loud, honking calls. Status Locally common resident, mainly in N. Wild migrants boost numbers in winter. Favours wetlands and reservoirs with adjacent grassland.