I've read a lot about moving chicks from their indoor heated brooded to the outdoor coop, and I've found some useful information, but i would love some opinions on my specific situation. I have some 1-2 week old pullets in a brooder in the house with a heat lamp. I know they are too young now to go outside (i took my 2 week olds out for a few minutes today and it was about 60-65 degrees and I could tell they got chilly.), I know they need to have all of their feathers before I put them out. I would just like to know the lowest temperature it can be outside for them to thrive without a heat lamp in the coop. I could put a heat lamp in the coop, but it makes me nervous about starting a fire or the extension cord shorting out because of rain or something. I know to wean them from the heat lamp gradually, I just want to make sure that when I do put them in the coop they will be ok, warm enough on their own ect. There are 35 of them so they can get warmth from each other. Thanks!