Kestrel or kite (6)
I believe the answer is:
raptor
'kestrel or kite' is the definition.
(I know that American Kestrel is a type of falcon)
This is all the clue.
(Other definitions for raptor that I've seen before include "Eagle, hawk, falcon or owl - parrot (anag)" , "Harrier possibly" , "Parrot (anag) - bird of prey" , "Hunter" .)