I purchased 3 female New Hampshire Red chicks on Saturday and 2 female Buff Orpingtons today. I have the 3 reds in a large dog cage in the garage. I dont have the heat lamp on but the temp is 90 degrees. Should I have the heat lamp on the young ones? Also, when can I mix them together? I put the Buffs in with the Reds and they started pecking them. Please help!