Nicolet Bird Sanctuary During the spring migration, there were nearly 500,000 snow goose ("Chen caerulescens"), or nearly all of the population of species "atlantica". It is also an important site for the migration of Canada (Branta canadensis), where more than 100,000 individuals were observed in 1998. There are also a number ("Black duck") ("Anas rubripes") and of black scoter ("Melanitta nigra"). During the autumn, there are a significant number of pintail ("Anas acuta"), small scaup ("Aythya affinis"), Scaup and golden-eye withered ("Bucephala clangula"). Ducks nesting on the site are the Aix sponsa, the nasal duck, Anas clypeata, the gill duck, Anas strepera), 'American
Lesser scaup scientific name is derived from Ancient Greek "aithuia" an unidentified seabird mentioned by authors including Hesychius and Aristotle, and Latin, "affinis" "related to", from its resemblance to the greater scaup. Adults are long, on average. The species can weigh ; males weigh on average and weigh noticeably less, at on average. Wing lengths (not wingspans) are about in males and in females; the tarsus is about long, and the bill . The wingspan is . The adult males (drakes) in alternate plumage have a black, iridescent head and a small tuft at the hindcrown, a black breast, a whitish-grey back