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 ... WebSep 18, 2024 · Greater Scaups measure 15.3 to 22.1 inches ( 39 - 56 cm) in length. They have a mass of 25.6 to 48.0 ounces (726 - 1360 g). Their wingspan measures 28.4-31.1 inches (72 - 79 cm) from wing tip to wing …
Greater Scaup - BirdWeb
WebFeb 23, 2015 · Greater scaup breed in Alaska and across northern Canada. In fall, they migrate south across most of Canada and the upper Midwest and Great Plains, and along east and west coasts. Most winter along the east, west and Gulf coasts, and in a region from the southern Ozarks of Arkansas and Oklahoma and east into Georgia. 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 winter. Here, black-and-white males and chocolatey … The only circumpolar diving duck, the Greater Scaup breeds across the tundra … The strange, warty-faced Muscovy Duck causes confusion for some bird … Greater Scaup are common throughout their range, but their populations are … Black-bellied Whistling-Ducks take readily to nest boxes. If you live within their … The exotic Mute Swan is the elegant bird of Russian ballets and European fairy … Trumpeter Swans demand superlatives: they’re our biggest native waterfowl, … The Red-breasted Merganser is a shaggy-headed diving duck also known as the … The male Ring-necked Duck is a sharply marked bird of gleaming black, gray, … The Wood Duck is one of the most stunningly pretty of all waterfowl. Males … Perhaps the most outwardly distinctive of the dabbling ducks thanks to its large … 26號小巴
Greater Scaup Ducks Unlimited
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 ... WebIn this regard, it is alternatively or additionally possible that greater scaup, which may be increasing in numbers, is putting the lesser scaup under increasingly severe competition. However, it seems that greater scaup eats larger food items on average, and the species are sympatric in part of their range and presumably have been for ... WebThe Greater Scaup averages about 10% longer and 20% heavier than the Lesser Scaup. The Lesser Scaup has a peaked, angular head that the Greater Scaup lacks. The … 26蒸馒头