Swallow covered in feathers (3)
I believe the answer is:
eat
'swallow' is the definition.
(swallow can mean to consume or eat up)
'covered in feathers' is the wordplay.
'covered in' says the answer is hidden in the clue.
'EAT' is hidden in the letters of 'feathers'.
(Other definitions for eat that I've seen before include "Be corrosive" , "Bit, chew and swallow" , "Scoff" , "Dine in a restaurant" , "Have 23d [MEAL]" .)