I'm in North Florida and have 6 pullets and 5 ducks. They are in a small temporary pen with no coop, just a plastic roof, some branches for perching and a Rubbermaid bin on its side if they feel like going in there. Can I do this on a bigger scale? Most of the year is very warm to hot, and during the winters gets down to 30s sometimes overnight, but more likely in the 50s-60s. What if I put up tarp on the sides of the pen to block the wind during the winter, and possibly a heat lamp on really cold nights. Is that enough?