虽然鸟类用羽毛飞行，但有些鸟类的羽毛还有其他用途。
Although birds use their feathers for flight, some of their feathers are for other purposes.
甲虫幼虫含有独特的化学成分，从猎食它们的鸟类的羽毛和血液中可以找到这种成分的痕迹。
The beetle larvae have a distinct chemical make-up, which can be traced through the feathers and blood of birds that eat them.
这是锦葵的花粉。它的刺帮助它牢牢地吸附在鸟类的羽毛上。
The pollen from a mallow flower. Its spines help it cling to birds' feathers.
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