Also, in all of these photos, you cannot see "hanging" alula or primary coverts often shown by Rook.
同时,所有的照片都看不到『悬起来』的小翼羽或大覆羽,通常秃鼻鸦会有这个特徵。
Also, in all of these photos, you cannot see "hanging" alula or primary coverts often shown by Rook.
同时,所有的照片都看不到『悬起来』的小翼羽或大覆羽,通常秃鼻鸦会有这个特徵。
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