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The Sibley Guide to Birds is a reference work and field guide for the birds found in the continental United States and Canada.It is written and illustrated by ornithologist David Allen Sibley.
Muscovy ducks had been domesticated by various Native American cultures in the Americas when Columbus arrived in the Bahamas. A few were brought onto Columbus' ship the Santa Maria, they then sailed back to Europe by the 16th century. The Muscovy duck has been domesticated for centuries, and is widely traded as "Barbary duck".
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A few are kept for show, or for their ornamental value. Most varieties of domesticated ducks, apart from the Muscovy duck and hybrids, are descended from the mallard, which was domesticated in China around 2000 BC. Duck farming is simplified by their reliable flocking behaviour, and their ability to forage effectively for themselves. Over 80% ...
The northern shoveler (/ ˈ ʃ ʌ v əl ər /; Spatula clypeata), known simply in Britain as the shoveler, [2] is a common and widespread duck.It breeds in northern areas of Europe and across the Palearctic and across most of North America, [3] wintering in southern Europe, the Indian subcontinent, Southeast Asia, Central America, the Caribbean, and northern South America.
Ducks eat pests (e.g. brown planthoppers) in the crop; they stir water, limiting weeds, and manure the rice. Surface must be even; water depth must suit ducks; young ducks best as they don't nibble rice leaf tips. [5] Rice-fish-duck: China: Fishes bred on rice terraces: Fattens ducks and fish, controls pests, manures the rice.
The diving ducks, commonly called pochards or scaups, are a category of duck which feed by diving beneath the surface of the water. They are part of Anatidae, the diverse and very large family that includes ducks, geese, and swans. The diving ducks are placed in a distinct tribe in the subfamily Anatinae, the Aythyini.
The Cayuga is a medium to heavy duck; standard weights are 3.6 kg (8 lb) for adult drakes and 3.2 kg (7 lb) for ducks. [11]: 440 [12]: 412 The plumage is black with iridescent beetle-green lights; particularly in ducks, some feathers may fade or whiten as the bird ages, which can be a disqualifying fault for showing.