Main symptoms: -excessive thirst -throwing up water -slight odor More detailed information below: My lavender Ameraucana is almost 3 years old. She had quit laying eggs for the winter. Two days ago she was sitting, yesterday we got an egg, although there is no way of knowing for certain that it was hers, but she has appeared active and healthy until now. Yesterday afternoon, I noticed she was drinking a lot of water and her entire head was soaked, even on top. She is under shelter all day, so I thought this was odd. This morning, her head was still soaked and she was shaking her head occasionally. It is below freezing, so I decided to bring her in and dry her off. While observing her in the coop, I noticed she was still drinking a lot, and sometimes water would drool out of her beak. When I picked her up, water started pouring out of her beak. She threw up water repeatedly as I carried her out. At first, she was wheezing, but I think she got a little water in her windpipe. I don't handle my birds often, so I'm sure she was alarmed. When I dried her head with the hair dryer, I did notice a slight odor. I'm not even sure where the crop is (on the right, front?), but I would say that area feels squishy. I got her to eat a little yogurt, bread soaked in olive oil and wine (I read that on here somewhere), flock raiser, and of course she likes water. I put a little Avia charge in it. Does this sound like sour crop? Can it clear up with yogurt or kefir, or do I need to get monistat or some other treatment? Is sour crop a medical emergency? We're in the middle of a big snowstorm, so it would be easiest to pick up treatment tomorrow. I appreciate any advice!