Have ten 8-9 week old chicks outside the last 3 weeks Added 3 silver laced Brahmas a week younger 6 1/2 weeks old .The second week out They dont want t o come out of the coop drink or eat with the others only rarely and dont run to eat unless its put in with them. They mostly huddle together under the light bulb its been about 75 or so out . They dont seem sick as they eat if i put it in there but seem afraid or something.Thought they would be over it now. I dont see the others paying any attention to them at all so dont so know if they are picked on. I am starting a coop of their own today as i feel like they are afraid of the others. Also Tonite it may get to 30 I see they have some fuzz still on their backs between their shoulders. all else is feathered Its 50 out now and they are huddled as usual Others are all outside but fluffed out in the cool air.(Was 80 yesterday)There are 13 of them total to keep each other warm and 2 roosts to sit on but Should i put a heating lamp in instead of the 60 watt light bulb? I am afraid it will get way too hot.The coop is just 2 ft tall and 4 ft long. I dont know what to do with them tonite in the cold Bring them back inside?Leave them ? What?