I put my 3 4 week old chicks in their coop during the day. At night I bring them in. I would leave them in the coop - with the heating lamp of course, but they don't go in there yet. At least during the day. In the day time they are too busy giving themselves dirt baths and enjoying their freedom. Do you think if I left them in there once they were cold they would gravitate towards the light and sleep inside their coop? Instead of cuddling together outside if they were cold? Would they be susceptible to .... well death.... if they got too cold?