Clean one's feathers (5)
I believe the answer is:
preen
'clean one's feathers' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for preen that I've seen before include "Congratulate (oneself); attend to dress" , "Groom (oneself) with evident vanity" , "Perfect one's appearance" , "Groom with great care" , "Beautify" .)