最終更新日:2022/12/24
On most birds, the tarsus is scaly and unfeathered, but a few arctic species--snowy owls, ptarmigans, and rough-legged hawks among them--have feathered tarsi.
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On most birds, the tarsus is scaly and unfeathered, but a few arctic species--snowy owls, ptarmigans, and rough-legged hawks among them--have feathered tarsi.