Byakhee

From LSWiki

This creature looks like some foul hybrid of bird and insect, being vaguely anthropoid in outline but with a bulbous, protruding lower body. It has an alternately chitinous and fibrous, almost feathery outer covering, all black in color, with large sharp claws and a nasty-looking half-beaklike, half-sawtoothed jaw. Its wings are thin and leathery, looking incapable of supporting flight, but fly the thing does nonetheless. This is one of the byakhee, creatures which dwell in the outer voids of the Prime plane and are used by some of the lloigor, primarily Nyarlathotep, as servitors. They fly primarily by means of the hune, a weird organ in their opisthosoma (their insect-abdomen-like lower body) that interacts with invisible fields of force to propel them.