I'm in Humble Texas, right outside of Houston. It's been in the 70s-80s the last couple days and we put our 3 week old chicks out in the coop today. They're pretty excited and seem happy. I just looked at the forecast for tonight and is going to dip into the 50s. Is that too cold for 3 weekers? They were on a lamp at 80° and a few days ago I turned off the lamp and they have been fine at room temp 70-75°.