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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 .
The Mariana mallard or Oustalet's duck (Anas oustaleti) is an extinct species of duck of the genus Anas that was endemic to the Mariana Islands.Its taxonomic status is debated, and it has variously been treated as a full species, a subspecies of the mallard or of the Pacific black duck, or sometimes as a subspecies of the Indian spot-billed duck.
The surf scoter (Melanitta perspicillata) is a large sea duck native to North America. Adult males are almost entirely black with characteristic white patches on the forehead and the nape and adult females are slightly smaller and browner. Surf scoters breed in Northern Canada and Alaska and winter along the Pacific and Atlantic coasts of North ...
The common scoter (Melanitta nigra) is a large sea duck, 43–54 cm (17–21 in) in length, which breeds over the far north of Europe and the Palearctic east to the Olenyok River. The black scoter ( M. americana ) of North America and eastern Siberia was formerly considered to be a subspecies .
Drill is a versatile fabric that has been used in a variety of applications. Boat sail drill is a lightweight, unbleached drill used to make sails for sailing craft. [1] [5] [6] Although duck (canvas) was more commonly used for these purposes, [7] drill has also been used to make tarpaulins, tents, awnings and canopies, [8] but the use of both fabrics has been supplanted in modern times with ...
Averaging 35.5 cm (14.0 in) and 370 g (13 oz), it rivals the green-winged teal as the smallest American duck. The bufflehead has a wingspan of 21.6 in (55 cm). [7] Adult males are striking black and white, with iridescent green and purple heads and a large white patch behind the eye.
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Cotton duck (from Dutch: doek, meaning "cloth"), also simply duck, sometimes duck cloth or duck canvas, is a heavy, plain woven cotton fabric. Duck canvas is more tightly woven than plain canvas. There is also linen duck, which is less often used. Cotton duck is used in a wide range of applications, from sneakers to painting canvases to tents ...