Sort of trap for a bird? (5)
I believe the answer is:
booby
I believe this is a double definition.
'sort of trap' is the first definition.
(I've seen this before)
'a bird?' is the second definition.
(booby is a kind of bird)
'for' acts as a link.
(Other definitions for booby that I've seen before include "Sort of trap" , "marine bird" , "Dunce" , "Stupid person" , "Gannet" .)