My chicks are six weeks old. We put them in the hen house about a 2 weeks ago with a heat lamp. We stopped using the heat lamp a week ago and it is getting so hot here (90) today that we stopped using it. They are huddling in one corner on top of each other practically..... they are not roosting at night. They do like the roost during the day to play on. Is this normal behaviour for chicks to huddle(pile) like that? I think the nightime temp is about 60, they have tons of feathers now. Just curious....cause the temp out there is 75 right now and its dark. Thanks!!