I'm wondering when it's safe to put my chicks outside in the coop during the night. They are 6 weeks old and getting pretty big for the brooder. They have pretty much all their feathers. I've been putting them out during the day and they've been doing fine. It's gotten down to the low 60's. I'm nervous about putting them out at night as it's still getting pretty cold (we've been getting some storm fronts moving in) and even inside the coop it'll be colder than it's been in the brooder. Everything I've read says 8 weeks, but how do you know they'll make it through a cold night?