Search results
Results from the WOW.Com Content Network
Examples of the colour(s) of the speculum in a number of ducks are: Common teal and green-winged teal: Iridescent green edged with buff. [1] Blue-winged teal: Iridescent green. [2] The species' common name comes from the sky-blue wing coverts. Crested duck and bronze-winged duck: Iridescent purple-bronze, edged white. [3]
Black scoters nest later than most other ducks in North America. Pairs form in late winter or spring. The lined nest is built on the ground close to the sea, lakes or rivers, in woodland or tundra. 5–7 eggs are laid. Each eggs weighs from 60–74 g (2.1–2.6 oz), or 8% of the females body weight. The incubation period may range from 27 to 31 ...
This is a list of the breeds of domestic duck which have official recognition at national or international level. [1]Most breeds of duck derive from the wild mallard, Anas platyrhyncos, while a small minority are descendants of the Muscovy duck, Cairina moschata.
Black-bellied whistling duck: Dendrocygna autumnalis (Linnaeus, 1758) 2 Spotted whistling duck: Dendrocygna guttata Schlegel, 1866: 3 West Indian whistling duck: Dendrocygna arborea (Linnaeus, 1758) 4 Fulvous whistling duck: Dendrocygna bicolor (Vieillot, 1816) 5 Plumed whistling duck: Dendrocygna eytoni (Eyton, 1838) 6 Wandering whistling duck
The eggs are typically white but can also be a blue-green color with thicker than normal shells. [9] They average a weight of 3.5 oz. [7] The French considered this domestic duck to represent the idea of "the Perfect Utility Duck." [9] In 1861, Mrs. Beeton said of it: The Rouen, or Rhone duck, is a large and handsome variety, of French extraction.
The harlequin duck (Histrionicus histrionicus) is a small sea duck. It takes its name from Harlequin (Italian Arlecchino, French Arlequin ), a colourfully dressed character in Commedia dell'arte . The species name comes from the Latin word "histrio", meaning "actor".
The lakes chosen are used yearly by the same ducks. The optimal moulting lake is fairly shallow and has an abundance of food sources and cover. [26] The female lays six to nine olive-buff-coloured eggs, [27] which she incubates for 24–28 days. [28] A larger clutch could indicate brood parasitism by other greater scaups or even ducks of other ...
The Swedish Blue is a medium-sized bird: drakes weigh some 3–4 kg, ducks about 2.5–3.5 kg.It is rather shorter and broader in body shape than breeds such as the Cayuga or Orpington; [8]: 63 the body is rounded, plump and full-breasted, the back is straight and fairly flat, and is about half as long again as it is broad.