Hi, our 1 year old blue wyandotte is in trouble. She seems to have difficulty breathing, hissing instead of clucking, losing weight, and now losing neck feathers. We think the hissing is her breathing, not intentional. Theres no sneezing, or discharge, and I've seen her eating, but still seems thin. We checked her for gape worm described in another thread by swabbing her throat with a q-tip and found nothing, but unsure of our method. Everyone else in the coop is great. We need some ideas! We're in an urban area so I don't think there's a vet option. They're in plenty of shade and have plenty of food and water. Please help!