I have a hen that has been sick for 2 days now, today she is going downhill fast. Puffed up, staying inside the coop, not eating or drinking, and now just lays around, doesn’t seem egg bound we tried the water and Vaseline but i don’t feel one. We cannot get her to eat or drink and she just hangs her head. 7 month old BCM. None of the other 20 chickens we have are acting weird. We checked for mites and see none. Any help is appreciated!