Kenku

Kenku are a sapient species of crow-like wingless avians.

Biology
The communicate through their ability to mimic any sound that they hear.

Culture
They often form thieves guilds, referred to as "flocks", in major cities. They work quite often as burglars, pickpockets, and assassins.

History
According to folk lore they were once birds who were cursed by a god to lose their wings.

Appearances

 * Heroes & Halfwits: Episode Five (First Appearance)