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The bufflehead (Bucephala albeola) is a small sea duck of the genus Bucephala, the goldeneyes. It breeds in Alaska and Canada and migrates in winter to southern North America. It breeds in Alaska and Canada and migrates in winter to southern North America.
Bufflehead was considered a "Priority Species" in the Bird Conservation Region Strategy in 2013. In 2015, Wild Species (Canada) presented that Bufflehead is in secure status. Later in 2018, the IUCN (International Union Conservative of Nature) stated that bufflehead is considered a "least concern" species. [ 17 ]
The genus Bucephala was introduced in 1858 by American naturalist Spencer Baird with the bufflehead as the type species. [1] [2] The genus name is derived from Ancient Greek βουκέφαλος bouképhalos, meaning ' bullheaded ', from boûs ' bull ', and kephalḗ, ' head ', a reference to the crest of the bufflehead making its head look large.
George C. Reifel Migratory Bird Sanctuary is a protected area in Delta, British Columbia, Canada, and is part of the Fraser River estuary, designated a site of Hemispheric Importance by the Western Hemisphere Shorebird Reserve Network.
Natural tree cavities chosen for nest sites include those made by broken limbs and those made by large woodpeckers, specifically pileated woodpeckers or black woodpeckers. [12] Average egg size is a breadth of 42.6–44.0 mm (1.68–1.73 in), a length of 58.1–60.6 mm (2.29–2.39 in) and a weight of 61.2–66.6 g (2.16–2.35 oz). [ 2 ]
Barrow's goldeneye (Bucephala islandica) is a medium-sized sea duck of the genus Bucephala, the goldeneyes.This bird was named after Sir John Barrow.The genus name is derived from Ancient Greek boukephalos, "bullheaded", from bous, "bull" and kephale, "head", a reference to the bulbous head shape of the bufflehead.
Bald eagles nest on the refuge and osprey visit in search of food. Red-tailed hawks and American kestrels are common raptors that nest here. During the summer shorebirds such as sandpipers and yellowlegs appear in small flocks, feeding on the mudflats. The most noticeable marsh birds are great blue herons, which nest in rookeries on the refuge.
Clayhanger Marsh is a 23.8 hectares (59 acres) biological site of Special Scientific Interest in the West Midlands.The site was notified in 1986 under the Wildlife and Countryside Act 1981.