depends on why he dropped the feathers, but i've also read that it does happen from time to time, usually as a defense mechanism. ether a crab or fish my have nipped at it and so it let them go. If this was the case it will grow them back, but if it dropped it due to health issues... i don't know for sure, but it may not. Keep and eye on it.
anyone know of anything Jester can do to help the duster regrow its feathers?