Bird overturned component for explosive device (5,4)
I believe the answer is:
booby trap
'explosive device' is the definition.
(booby trap is a kind of explosive device)
'bird overturned component' is the wordplay.
'bird' becomes 'booby' (booby is a kind of bird).
'overturned' shows that the letters should be reversed in order.
'component' becomes 'part' (I've seen this in another clue).
'part' written backwards gives 'trap'.
'booby'+'trap'='BOOBY-TRAP'
'for' is the link.
(Other definitions for booby trap that I've seen before include "concealed danger" , "hidden hazard" , "mine?" , "Device for practical joke" , "hidden bomb, perhaps" .)