Duo use lime to catch bird (5)
I believe the answer is:
ousel
'bird' is the definition.
(ousel is a kind of bird)
'duo use lime to catch' is the wordplay.
'to catch' says the answer is hidden in the clue (the answer is caught in the letters of the clue).
'OUSEL' is hidden in the letters of 'duo use lime'.
(Other definitions for ousel that I've seen before include "Former name for blackbird" , "Type of thrush" , "Old name for a blackbird; also a kind of thrush" , "Bird similar to blackbird" , "Singer" .)