Hey all. New to chickens this year and I have 6 little chicks around 3 weeks old and we are wanting to move them out to the coop with a heat lamp in there of course but my question is will it be too cold? The week is going to be 60s-70s all week but night temps around 40. We are located in va somewhat in the middle. I just don't want to put them out too early and lose my little flock due to cold. Any advice is appreciated!