東方鳥類俱樂部圖片資料庫 (OBI, Oriental Bird Club Image Database) 探索收藏
ML377672951 OBI 74605
- 年齡
- 未確定
- 性別
- 未確定
影音備註
Colour aberrant individual. Remarks: Apparently this species. The colour of the bill seems to be due to a coating of mud. - Ed This individual appears to be suffering from a colour aberration known as Progressive Greying, rather than Leucism. So the bird must have developed these white feathers at a later age. (In leucism proper the white feathers are already present in the juvenile plumage and the pattern will not change during life.) - Hein van Grouw. Date added to OBI: April 05, 2013.
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東方鳥類俱樂部圖片資料庫 (OBI, Oriental Bird Club Image Database)
技術資訊
- 次方
- 647 pixels x 437 pixels
- 原始檔案大小
- 67.45 KB