| 翻訳と辞書 |
| Indian whistling duck ： ウィキペディア英語版 |
Lesser whistling duck
The lesser whistling duck (''Dendrocygna javanica''), also known as Indian whistling duck or lesser whistling teal, is a species of whistling duck that breeds in the Indian Subcontinent and Southeast Asia. They are nocturnal feeders and during the day may be found in flocks around lakes and wet paddy fields. They can perch on trees and sometimes build their nest in the hollow of a tree. This brown and long-necked duck has broad wings that are visible in flight and produces a loud two-note wheezy call. It has a chestnut rump, differentiating it from its larger relative, the fulvous whistling duck, which has a creamy white rump.
==Description==
This chestnut brown duck is confusable only with the fulvous whistling duck (''D. bicolor'') but has chestnut upper-tail coverts unlike the creamy white in the latter. When flying straight, their head is held below the level of the body as in other ''Dendrocygna'' species. The crown appears dark and the sexes are alike in plumage. They fly slowly but with rapid wing-flapping and usually produce a repetitive wheezy ''seasick'' call as they circle overhead. They are very nocturnal and often rest during the day. The outermost primary feather has the inner vane modified. This has been said to aid in producing a whistling sound in flight, although this has not been supported by field studies.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Lesser whistling duck」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|