I have a buff orp that is sitting in one of my nests. Her name is buffy. I find it kindof wierd that she's sitting on eggs in december.
Chickens don't seem to care that it is winter. When the broody hormones kick in that's it. What you can do is break her broodiness by putting her in a wire cage with only food and water for a few days (3 days generally does the trick) or give her some fertile eggs to hatch. I've had broodies hatch chicks in winter and raise them outside without any problems.
