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Introduction Janet Kear
Taxonomy and systematics Des Callaghan and John Harshman
Feeding ecology Baz Hughes and Andy J Green
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Anseriformes arctic Bewick's Swans bill birds body breast breeding areas breeding behaviour breeding season brood captivity Carbonell 1996 clutch coastal colonies Common Eider Conservation and threats coverts Cramp and Simmons cygnets dabbling ducks dark brown Delacour Description Adult Displays and breeding diving ducklings eggs feathers feeding female Field characters fledging flight flightless flocks Frith geese Goose goslings grey habitat hatching head and neck hunting Iceland increased incubation Island Johnsgard and Carbonell Kear lakes legs and feet Livezey Magpie Goose male Marchant and Higgins mate migration migratory moult Musk Duck Mute Swans nest nonbreeding North numbers occurs Owen pairbond pairs pale parents plumage population predators Range and status roosts Ruddy Duck sexes Shelduck Snow Geese Snow Goose South southern species stifftails subspecies survival Svalbard tail tarsus Teal territory tion vegetation Wandering Whistling-duck wetlands Whistling-duck White-headed Duck Whooper Swans wild wildfowl wing moult winter young