Hello everyone! I' brand new to chickens so please forgive me for all the questions. I got 4 chicks,2 Barred Rocks and 2 Easter Eggers. They are right around 4-5 days old as far as I can tell. They have been digging holes in the bedding and laying in them. Or just digging and scratching around. Does this mean they are too warm? Or is it normal chick stuff?