Hi! I have 3 chickens in a chicken tractor, and this afternoon found the Red in the run, sitting down with eyes closed when I went to feed them. I live in IN, it got down to 19 degrees here last night but it's been colder this winter already, and they've been fine. I feed them regular layer's mix pellets, and scratch (corn, oats, millet). Their water was frozen, but the other two (Americaunas) are fine. I changed the water and took the Red inside. I have her wrapped in a towel with a heating pad and am trying to give her water from a dropper. noticed a few lice on her but not a ton. Vent is pink and seems like she hasn't laid for a while (I haven't had eggs for about 2 weeks). What could be going on???