Wipe out bird in select group (9)
I believe the answer is:
eliminate
'wipe out' is the definition.
('eliminate' can be a synonym of 'wipe out')
'bird in select group' is the wordplay.
'bird' becomes 'mina' (mina is a kind of bird**).
'in' means one lot of letters goes inside another.
'select group' becomes 'elite' (I've seen this before).
'mina' going into 'elite' is 'ELIMINATE'.
(Other definitions for eliminate that I've seen before include "Knock out" , "put out" , "Cut out" , "Eradicate" , "Reject" .)