Bird damaged on a road (7)
I believe the answer is:
bustard
'bird' is the definition.
(bustard is a kind of bird)
'damaged on a road' is the wordplay.
'damaged' becomes 'bust'.
'on' means one lot of letters go next to another.
'road' becomes 'rd' (abbreviation).
'bust'+'a'+'rd'='BUSTARD'
(Other definitions for bustard that I've seen before include "Long-legged, heavy-bodied bird" , "Large heavy bird" , "flyer" , "See large bird" , "Bad rust (anag.)" .)