WebJul 6, 2006 · In contrast, San Joaquin Valley agricultural drainage loads disposed of in a San Luis Drain extension could range from 45 to 117 pounds of selenium per day across a set of historical and future conditions. ... Surf scoter, greater and lesser scaup, and white sturgeon appear to be most at risk because these Bay-Delta predators feed on deposit ... WebNov 29, 2024 · An adult male Greater Scaup is readily identified by its smooth pale grey mantle – with very fine vermiculations – contrasting with white flanks, black breast and black rear end. The head lacks a nape tuft. Females and …
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WebMore numerous were Great Cormorants (200+) and especially Greater Scaup with a single raft of 1,900 (fringed loosely by c. 15 breeding-plumaged Black-necked Grebe) out near the seawall. In among the scaup, a few smaller, darker-backed males seen at range, and one smallish-looking female caught wing-flapping – showing obvious contrast on the ... WebFemales are plain brown overall, a lighter blond color than scaup and Ring-necked Duck. Also note evenly rounded head shape. About the size of Greater Scaup, but slightly larger than Lesser Scaup and Ring-necked Duck—this … how to set homepage on opera
The greater scaup.pdf - THE GREATER SCAUP ARYTHYA MARILA ...
WebThe only circumpolar diving duck, the Greater Scaup breeds across the tundra regions in North America and Europe. They congregate by the hundreds and thousands along the Pacific and Atlantic coasts during … WebThe breeding range of scaup is extensive, reaching from the northern United States through the Prairie Pothole Region northwest to the Bering Sea. The largest breeding population occurs in Canada's western boreal … WebThe Greater Scaup is the more northerly of the two species of North American Scaup. In the summer, they breed on marshy, lowland tundra at the northern limits of the boreal forest. In winter, they gather in coastal bays, lagoons, … how to set homepage on imac