I have 8 chicks between 1 and 3 weeks old (had one pass and got a replacement chick). They're spending less time under the heat plate and quickly outgrowing the indoor brooder. If they have the heat plate still (which I have no intention of removing til they're fully feathered) would they be ok in the brooder I have built in my coop? In Upstate NY and still have some cooler nights. I think they'd be happier but I worry they're so little! Maybe daytime outside and back in at night for a few weeks?