Tidy and clean (feathers) (5)
I believe the answer is:
preen
'tidy and clean feathers' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for preen that I've seen before include "(Of a bird) tidy and clean feathers" , "Titivate oneself" , "setdown straight?" , "Beautify" , "Tidy/clean (feathers)" .)