Nearly all birds have a tail, the paired flight feathers of which, called rectrices, extend from the margins of a bird’s tail. Tails may be square, rounded, pointed, or forked, depending on the lengths of the rectrices and the way they terminate.
- tail [teil] n.尾
- rectrix [ˈrektriks] n.舵羽(鸟尾上的硬毛)
- square [skwɛə] adj.正方形的
- forked [fɔ:kt] adj.叉状的
- terminate [ˈtə:mineit] v.结束
