Hi there. I am completely new to chickens (birds in general) and I have lots of questions. This site has been super helpful so far. Looking forward to learning more too. Mainly, when are they able to stay outside at night??? They are 6 weeks old now and hate coming inside at the end if the day already. Do they need a heat lamp in the coop at night? It has been 70+ diluting the day, but gets down in the 50s in the pre-dawn hours. I just worry about them getting too cold.