Hawks and doves (5)
I believe the answer is:
birds
'hawks and doves' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for birds that I've seen before include "Gulls" , "Terns and tits, say" , "Feathered fliers" , "Things may be strictly for them!" , "... strictly receivers of rubbish" .)