凤头树燕 Hemiprocne coronata 雨燕目 凤头雨燕科 凤头雨燕属 雄性 The Crested Treeswift (Hemiprocne coronata) is a kind of tree swift. The tree swifts are aerial near passerine birds, closely related to, but distinct from the true swifts. They are restricted to southeast Asia
