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northern shoveler
The northern shoveler (; ''Anas clypeata''), or northern shoveller in British English, sometimes known simply as the shoveller, is a common and widespread duck. It breeds in northern areas of Europe and Asia and across most of North America,〔 wintering in southern Europe, Africa, the Indian subcontinent, Southeast Asia, and Central, and northern South America. It is a rare vagrant to Australia. In North America, it breeds along the southern edge of Hudson Bay and west of this body of water, and as far south as the Great Lakes west to Colorado, Nevada, and Oregon.〔〔
The Northern shoveler is one of the species to which the ''Agreement on the Conservation of African-Eurasian Migratory Waterbirds'' (AEWA) applies.〔 The conservation status of this bird is Least Concern.〔
== Taxonomy ==
This species was described by Linnaeus in his ''Systema naturae'' in 1758 under its current scientific name.〔 Usually placed in ''Anas'' like most dabbling ducks, it stands well apart from such species as the mallard and together with the other shovelers and their relatives forms a "blue-winged" group that may warrant separation as genus ''Spatula''.
No living subspecies are accepted today. Fossil bones of a very similar duck have been found in Early Pleistocene deposits at Dursunlu, Turkey. It is unresolved, however, how these birds were related to the northern shoveler of today; i.e., whether the differences noted were due to being a related species or paleosubspecies, or attributable to individual variation.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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