I have a 6 month old buff orpington who has been breathing hard, walking slowly, having dark green poop, and not eating much. We put her in a big cat cage on the porch away from the rest of the chickens but she's still acting Lethargic. We gave her an oatmeal/dry milk recipe my grandma found online and we gave that too her. She's been eating it a little bit but her crop still feels empty. She's been drinking some from what I've seen. I checked if she was egg bound and there wasn't an egg. She's been laying for a while but hasn't been the past few days. Her "fluffy part of the butt" seems to be swollen but there are no visible injuries and I haven't seen any mites. I have also heard about the bird flu outbreak but she doesn't have the symptoms for that. I'm in Opelika Alabama if that helps. I'm completely lost to what's going on with her. Any help would expect really appreciated.