I have 6 chicks, 6 weeks old. They are assorted feather-footed bantams. One has a very tall, pronounced comb and the others do not. Does that mean I have one rooster and 5 hens, or is it too early to tell? Also, I am keeping them in my quail pen while I finish the coop, which is nearly completed. I have one heat lamp in the pen which they seem to still be relying on at night. They seem to be well feathered. Are they old enough to be without heat once I move them into the coop? I live in northern minnesota, and last night it was 32 degrees F. thanks in advance!