A summary of information on 154 species of duck, geese and swans of the world intended as an identification manual for the wildfowl enthusiast that goes beyond a regional basis and is light enough to be used as a handy reference book in the field. The text not only clarifies identification techniques but fully discusses problematic plumages in detail as well as providing a summary on world distribution and status complemented by clear distribution maps.
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ADULT FEMALE ADULT MALE BREEDING Adult male eclipse belly bill birds blackish body plumage breast breeding season browner buff central chiefly coastal coloration Common Eider Common Goldeneye contrasting crown dabbling duck dark grey darker diving diving duck duller dusky eastern Falkland Islands Feeds Ferruginous Duck FIELD IDENTIFICATION Length flanks flight feathers flocks foreneck GEOGRAPHICAL VARIATION Goose greater coverts Greater Scaup greyer greyish greyish-brown HABITAT head and neck hindneck Islands larger than females Legs and feet Lesser Scaup lowland Mallard mean weight MEASUREMENTS Males mottled moult Nests nominate race North America northern Pacific Black Duck pale paler patch Plate plumage plumages similar Pochard population range Ruddy Duck scapulars Scaup Sexes similar Sexually dimorphic Shelduck sides of head southern species speculum Swan tail tarsus Teal Text tips Tufted Duck underparts undertail-coverts Underwing upperparts upperwing Upperwing-coverts Vagrants ventral region weight of male western Whistling Duck whitish Wigeon Wildfowl winter