Hello all- total newbie here and wondering about sunlight and baby chicks? I know I keep reading a heat lamp, but a red bulb if possible so there's no picking... but what about sunlight? It'll be cold here in Feb. when I hope to get them, and would prefer to keep them in a small part of my finished basement where it stays a stable 70 degrees (plus the heat lamp for more). However, there is no window in this area. Is this an issue, or can I simply leave on the regular overhead light bulb as "sunlight"? Thanks.