I read a bunch of past posts and became even more confused. If someone would help clarify, pretty please!!! If we decide not to go with lights, and egg production decreases too much, I can add a light at a later time and after a few days, egg production will come back up? If I add a light it could be a UV light or an incandescent with no ill effects? And if it's a UV, does it need to be a particular light spectrum? Also, what would be the lowest wattage? And the optimum would be 16 hours of light a day, a few in the a.m. and a few on the back end? If I decide we don't need a light, production is okay, then can I use a red bulb over the waterer to keep the water liquid with no ill effects on the birds? The birds are free range during the day. Australorps, Speckled Sussex, Dark Brahmas, and an ee - so most of these are good winter birds. Thanks for taking the time to answer!