单词	bluebill
释义	bluebill /ˈbluːbɪl / noun 1A large African waxbill with a stout metallic blue bill and red and black plumage. Genus Spermophaga, Estrildidae: three species. 2Any of a number of ducks with blue bills: North American The scaup duck. Australian The blue-billed duck (Oxyura australis).. Scaup (bluebill) numbers plummeted during the past two decades, falling from a high of more than 7 million in the early 1980s to about 3.4 million this year.... When drought hit the prairies and parkland in the mid-1980s, scaup (bluebill) numbers fell below their goal of just over 6 million. The research also determined that body weights of collected bluebills were greater than or similar to estimates from birds collected in the 1980s before the precipitous decline.
随便看	marshbird marsh-buck marsh cinquefoil marsh crocodile Marsh, Dame Ngaio marsh deer marsh dog marsh elder marsh felwort marsh fern marsh fever marsh-fire marsh fleawort marsh flower marsh fly marsh fritillary marsh frog marsh gas marsh gentian marsh grass marsh harrier marsh hawk marsh hay marsh helleborine marsh hen

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