Hi all-- This morning, I went out to the coop and found my dear white leghorn, Oleta, in a nest box, looking very, very sick. She is my champion layer--she lays an egg almost every day, even though we've been having sub-zero temperatures and the ground is covered in snow! I noticed she smelled very, very bad and her entire abdomen/vent area was caked with diarrhea. I decided to bring her into the house--it's extremely cold out right now, and I knew the cold wouldn't do her any good. She definitely laid an egg yesterday and was eating, drinking, and pecking around the yard just fine, so this is a very sudden onset of whatever it is. Her symptoms are as follows: -EXTREME lethargy (she can't keep her eyes open) -wobbly -REALLY foul smelling, completely watery diarrhea (I picked her up to inspect her belly and she pooped everywhere) -darker tinge to the tips of her comb, though that could be mild frostbite -wings drooping As soon as I brought her in, I gave her 21 CCs of lactated ringers and a warm bath to clean off all the caked-on diarrhea. I'm keeping her warm in the spare bathroom. She has no interest in food or water. Her belly MIGHT be redder and more swollen, though I can't say for sure. Since she's such a good, consistent layer (of always perfect, large eggs), it doesn't seem likely that this could be egg yolk peritonitis, but I can't say for sure... What should I treat her with? I feel like I need to do something for her fairly quickly. I will keep giving her fluids. I do have some penicillin on hand. Your advice is greatly appreciated! thank you!