I put the feeder and water in the run with mine everynight. I have to be at work at 5am and my husband is unable to let them out until around 8:30 so I try to keep a little something in the coop for them. I really dont know about the heat thing as I live in Ga. and mine are between 6 and 8 weeks old and have done wonderfully at night but my coop is insulated. As for registering them you might want to check with your code enforcement if you are unable to get answers here (but there always seems to be somebody on BYC that knows the answer (BYC is wonderful
) to a question).