國際鳥類典藏 (IBC, Internet Bird Collection) 國際鳥類典藏 (IBC, Internet Bird Collection) 探索收藏
Lesser Whistling-Duck - Rusman Budi Prasetyo
報告

提供者

日期

地點

Bozem Wonorejo (-7.3087, 112.821)
Jawa Timur, Jawa, Indonesia
來自這個地點的影音 影音名錄
地圖
地圖 座標: -7.3087, 112.821
年齡
未確定
性別
未確定

影音備註

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. Elevation: 0 m. Date added to IBC: June 22, 2016.

蒐藏

國際鳥類典藏 (IBC, Internet Bird Collection)

技術資訊

型號
Canon EOS 60D
鏡頭
205-390mm
ISO
1600
焦距
390 mm
閃光
Flash did not fire, auto
光圈值
f/8.0
快門
1/1600 sec
次方
1000 pixels x 667 pixels
原始檔案大小
353.21 KB