当他们让一只燕鸥或鹈鹕扔下一条鱼时，他们会一头栽到水里，然后把鱼从水面抓起来，这可能就是这只鸟被油弄脏的原因。

When they get a tern or pelican to drop a fish, they plunge down and grab it off the surface of the water, which may have been how this bird got oiled.

youdao

记得小时候，我家堂屋当门的横梁上有一个燕窝，燕窝下面还吊着一个用于接燕屎的草帽。

Remember when I was small, central room, when my house door beams, there is a bird's nest, bird's nest is also hanging below one for the next nest of straw feces.

youdao