Hello fellow chicken lovers. I have a 2.5 year old sex-link hen that I'm concerned about. She has been acting extremely lethargic, her stomach is "growling" making lots of noises, she stretches out her neck occasionally and gasps like she is gagging, and slightly foul smelling " spit" drips out of her beak sometimes. I have had her in my house for 3 days which she seems to love and I'm giving her Amprolium. I will give her immune boost after treating with Amprolium. Her first night inside she did not poop at all. The next night she pooped a little bit. She does not have much of an appetite but does eat a little bit. She is drinking water regularly. Any advice is appreciated. I've never wormed my chickens but always put ACV in their water and occasionally D.E. in their food. I'm also good about keeping their coop and run poop-free. If she does not get better I'm dreading having to cull her as she is one of my friendliest chickens and also one of the best layers. I cannot afford another trip to the chicken vet which I had to do 2 years ago for another sick chicken ( totally different symptoms ) and ended up having to cull her after trying 2 different meds.