Good evening esteemed poultry colleagues! My apologies for this very commonly asked question, but I wanted to get additional feedback besides what I've read on the forum. My 8 little ladies will be 5 weeks old this coming Monday. They are getting quite big now and appear to be almost fully feathered. Whenever I open the brooder lid, they go crazy, flying and flapping, trying to get out so they can either sit on the side or walk around on the lid. Is it too early to move them to the coop? My coop is about 9'x18' made of cinder block and will have the floor covered with pine shavings. Our nighttime temps are still getting down in the low 40's. Is that too cold for them? I could put the heat lamp out there if need be. They are just getting to be too large for my brooder which is only about 2.5' x3.5'. And they are starting to get a little smelly.... and of course, they are pooping everywhere! What do you all think? Many thanks for your input.