Bird — investigating having wings being clipped (5)
I believe the answer is:
robin
'bird' is the definition.
(robin is a kind of bird)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for robin that I've seen before include "Small brown and red bird" , "Bird; Batman's aide" , "Hood, Goodfellow or redbreast?" , "Christmas songbird" , "Batman's helper" .)