Bird of the night (3)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
owl
'bird of the night' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for owl that I've seen before include "One swoops" , "Solemn person" , "Creature" , "Night hunter" , "Member of Parliament" .)