ive got four chicks about four to five weeks old. three australorps and one orpington. they are pretty well feathered, except for their heads which are going through the ugly stage. they spend all their days out in the yard and have been for about two weeks. they live in a 4' x 2.5" coop in the yard. the coop has small windows up top on opposing sides. the windows can be shut at night. the floor has about 5" of bedding (pine shavings). during the day my temps run about 70-80 and at night about 60. i have a 100 watt red heat lamp that i have used since they were little and we still turn it on at night. can i stop with the heat lamp at night? by the way, anyone in los angeles/southern california looking for a black australorp cockerel? oh well.