I have a four year old hen who has been sick for the last week and a half. Her face and comb are purple but don't look swollen up and she's breathing very heavily, especially when she's sitting down. She's been acting sluggish but she's still been eating and drinking, although a little less than normal. She has green and whitish diarrhea. She's been getting out of the coop and walking around the yard with the other chickens, but after a while she will stop and sit down in the shade and close her eyes. She keeps getting these tiny little grey bugs around her butt and ive cleaned the coop throughly and applied diatomaceous earth and poultry safe pesticide. I gave her an Epsom salt bath to clean the poop off her butt and it cleared up the bugs. She doesn't seem wobbly and her legs look find. I can't find anything else the matter with her. She hadn't been sneezing at all but i can't tell if shes laying eggs or not. Another one of my hens seems to be showing similar symptoms, she doesn't look as bad but she is slightly purple and she is sitting out in the yard just like the sick hen so I believe it's something contagious or environment related. My regular vet couldn't see her so I took her to a vet that said they took chickens and they had me in the waiting for 3 hours to tell me they would to have to do an xray and talk to an exotics specialist and they quoted me $700. I love my girls so much but I don't have a spare $700 for them to maybe find out what is wrong with her. I have an appointment with my regular vet in 10 days but I'm worried she won't make it that long because I have no idea what is wrong with her. Anyone know what the problem could be? Or what I might be able to do to narrow down the possibilities?