As far as what in particular? Most of mine are very, very old, except for two younger breeding groups of Brahmas and Barred Rocks. By old, I mean 8-12 years old and most of those have some issues with arthritis in their joints so those get a heat spot they can get underneath for the worst of winter nights. The others get nothing different than any other time of year, really, just the 22% protein layer feed and my 16% protein grain mix in small amounts, plus a probiotic here and there.
All of my birds are in a large steel barn with 5 windows that are always cracked for ventilation, in their various pens, so they're out of the weather.
and Welcome to Backyard Chickens.
