Today is such a lovely day, so I put my month-old chicks outside in an enclosed area for the day. I plan on bringing them in at night for the time being. Anyway, when can they be outside full-time? Our last frost is not until late May or June, and we generally have lots of rain and then also plenty of beautiful days until summer. I no longer have a heat lamp as it broke a few days ago. Do I need to get a new one (if so, what kind should I buy)?