I have two Pekins that are about two weeks old - their feathers (I know they don't have feathers yet - do you call it down?) anyway they seem to be loosing their "feathers." I can see their pink skin - is this normal? and the larger one seem to be worse, especially under his chin. He does scratch a lot so I'm worried - should I be? I'm using paper towels in the brooder with aspen shavings - the bag says it's safe for birds. Thanks!