Lately, I've been looking in our brooder and finding dark grayish feathers! Some are small, and some are huge! The chicks aren't showing any signs of trauma or picking (they are almost 6 wks old) and I was wondering if it's normal for chicks to just... loose feathers daily? There's not lots, in total maybe..... 10 over... 2 or 3 days? I know for a fact that a huge one came from the wing! I mean, where else would you find a feather that big?! Should I watch the chicks for picking? Or is this natural?