Shoot bagging leading bird (7)
I believe the answer is:
bustard
'bird' is the definition.
(bustard is a kind of bird)
'shoot bagging leading' is the wordplay.
I cannot really see how this works, but
'leading' could be 'star' (synonyms) and 'star' is found within the answer.
'shoot' could be 'bud' (I've seen this before) and 'bud' is found within the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for bustard that I've seen before include "Long-legged, heavy-bodied bird" , "See large bird" , "Bad rust (anag.)" , "flyer" , "Large heavy bird" .)