i put the girls in the coop at night - or more specifically they put themselves in and I just shut the door. I noticed though that they tend to pig pile in one corner on top of each other. Is this normal behavior? there are 4 nesting boxes and they haven't started laying yet. They are about 16 weeks old, so it should be soon. There isn't a light in there and they almost act scared. Some roost a bit and there are a lot of feathers on the floor of the coop in the morning. Thoughts??