Small fowl (6)
I believe the answer is:
bantam
'small fowl' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for bantam that I've seen before include "Half of 1D [GAME OR BIRD]" , "Little clucker" , "Supplier of eggs" , "Small breed of chicken" , "Small chicken and light boxer" .)