bates's swift Apus batesi

A small, entirely blackish swift with a slightly dusky throat and a deeply forked tail. Flies rapidly over lowland forest, occasionally gliding briefly. Most often found over lowland forests, where it nests in abandoned swallow nests such as those of Forest Swallow. In profile, similar to African Palm-Swift or Scarce Swift, but Bates’s Swift has wider wings and a bigger body, and is overall much darker.