Answer: MOLT

AnswerCrossword Clue
MOLTLose tail feathers
MOLTGo through a renewal process.
MOLTCast off shell, horns, etc.
MOLTWhat birds do
MOLTDiscard, animal style
MOLTCast off
MOLTShed plumage
MOLTShed an outer layer
MOLTExuviate
MOLTShed, as skin
MOLTWhat some birds do
MOLTUndergo ecdysis
MOLTTake off one's coat?
MOLTExperience ecdysis
MOLTCome out of one's shell, maybe
MOLTCast off skin
MOLTSlough.
MOLTShed feathers or skin
MOLTShed skin periodically, e.g.
MOLTLose a layer
MOLTShed hair
MOLTShed hair, e.g.
MOLTBirds and snakes do it
MOLTRattlesnakes do it
MOLTFail to save one's skin?
MOLTDrop down
MOLTLose one's feathers
MOLTLose one's coat
MOLTShed old feathers
moltto shed skin or feathers
moltto shed feathers or fur, also MOULT
MOLTLoose feathers
MOLTShed
MOLTShed a coat
MOLTShed, snake-style
MOLTJump out of one's skin?
MOLTLose feathers
MOLTSlough off
MOLTSnakes' renewal process
MOLTDrop down?