So I just cleaned the old bedding out of my brooder that has 8 chicks that are all about 3 weeks old, and as soon as I put them back in with fresh bedding, most of them started pecking at it and eating something in it and 2 or 3 other chicks started like kicking it up and laying in it and they got alot of it on top of themselves. Then the other chicks started pecking the stuff off of them. Is this normal? Were they just cleaning each other? and Do I need to worry about it? The bedding is some saw dust and dirt that the farmer that I got the chicks from gave me to use for bedding.