I don't get it! They are 6 days old, but if I put their heat lamp on they cry & try to escape the whole brooder even though they can get away from the heat . They have already got feathered wings & tails & are rapidly growing. The heatlamp is as high as I could get it. They don't sleep huddled up , so I guess they are not cold. My previous chicks were pekin bantams which were always cold & took ages to feather. These are standard barnyard mixes, Easter eggers etc. They can fly to, at 6 days great feathers.