Ok late March in Ohio and I have some new to me Cornish Cross chicks and 2 I think Barred Rock chicks from TSC. Three weeks ago I brought home 4 of the biggest CC chicks home and 2 Bared rock chicks. These things grow much faster than the pullets I got last year. The 50 gal tote brooder I had was getting small and they were stinking up the basement. So I put up a temporary 4x8x3 coop in the garage next to my 4x8 coop for my layers. And when I picked up more pine shavings to put in the new coop I picked up 6 more CC chicks that they said were 3 weeks old. And everybody moved out to the garage with the big girls. Well I woke up this morning to a couple inches of snow on the ground. So I have not opened the pop door for the girls (even though they wont go out in the snow much, they like the door open. The new coop has a heat lamp. Should I be worried about the temp for the new ones with the pop door open? Everyone seemed fine this morning. they seem to either be eating or in a pile under the lamp. And the big girls want their door open to see whats going on outside.