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The Black Duck Joint Venture is a conservation partnership established in 1989 to stabilize and restore the population of the American black duck (Anas rubripes). [ 1 ] [ 2 ] It consists of government and non-governmental agencies and organizations in Canada and the United States. [ 3 ]
The American black duck (Anas rubripes) is a large dabbling duck in the family Anatidae.It was described by William Brewster in 1902. It is the heaviest species in the genus Anas, weighing 720–1,640 g (1.59–3.62 lb) on average and measuring 54–59 cm (21–23 in) in length with an 88–95 cm (35–37 in) wingspan.
In 2007 the final Comprehensive Conservation Plan was signed, adding the eleventh division, York River Division. When land acquisitions are complete, the refuge will be about 14,600 acres (59 km 2) in size. In 1984, a National Estuarine Research Reserve was established in Wells, Maine. The reserve land is made up of portions of the Upper and ...
This is a list of Anseriformes species by global population. While numbers are estimates, they have been made by the experts in their fields. Anseriformes (Anser being Latin for "goose") is the taxonomic order to which the ducks, geese, swans, and screamers belong.
The retention of ancestral genetic variation can be caused by incomplete lineage sorting (ILS) and introgression after secondary contact. These two factors can cause genetic variation to be shared between closely related species which is possibly why an American black duck or a Mottled duck (Anas fulvigula) may have notable white on its speculum or a Mexican duck may have flecks of green.
The Stewart B. McKinney National Wildlife Refuge is a 950-acre (384.5 ha) National Wildlife Refuge in ten units across the U.S. state of Connecticut.Located in the Atlantic Flyway, the refuge spans 70 miles (110 km) of Connecticut coastline and provides important resting, feeding, and nesting habitat for many species of wading birds, shorebirds, songbirds and terns, including the endangered ...
Anseriformes is an order of birds belonging to the clade Galloanseres.It consists of 3 families, 58 genera and 171 living species. [1] [2] Extinct species assignment follows the Mikko's Phylogeny Archive [3] and Paleofile.com websites. [4]
The conservation of this migratory bird was the impetus for the creation of the national wildlife refuge. [5] Other waterfowl that inhabit the Pettaquamscutt Cove area include mallard (Anas platyrhynchos), gadwall (A. strepera), American wigeon (A. americana), Canada goose (Branta canadensis), and bufflehead (Bucephala albeola). [3]