My chicken can't breath. She opens her beak upwards and hisses. It's gotten really bad now and her breath rattles. No vets in the area treat chickens. I'm at whits end. Huz suggests a mercy kill even though she is our favorite bird. She has pooped herself as well, her eyes droop and close, she won't take water or food. She is now crouching in the bushes gasping for air. This totally sucks. I have no clue what I should do. Any help at all would be so appreciated.