布氏白腰雨燕
Blyth's Swift
Apus leuconyx
分类位置
形态与习性
Blyth's swift (Apus leuconyx) is a small species of bird. It is superficially similar to a house martin, but completely unrelated to those passerine species, as swifts are in the order Apodiformes. The resemblances between the groups are due to convergent evolution reflecting similar life styles.