Copy a bird (6)
I believe the answer is:
parrot
I believe this is a double definition.
'copy' is the first definition.
(thesaurus)
'a bird' is the second definition.
(parrot is a kind of bird)
(Other definitions for parrot that I've seen before include "A flighty creature" , "Repeat automatically" , "Spout" , "Raptor (anag.)" , "Brightly coloured bird that mimics speech" .)