Big-eyed bird (3)
I believe the answer is:
owl
'big-eyed bird' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for owl that I've seen before include "Hooting bird" , "Wise figure" , "One swoops" , "Someone solemn or wise or staying up at night" , "Low kind of wise bird" .)