Please help. I have no idea what is happening with my birds. A few days ago I came outside to find one of my bantam pullets huddled in a corner. I pulled her out and noticed a long black string wrapped around her foot and in her mouth like she had swallowed it. After many miserable attempts to pull it out, I cut it as far into her mouth as possible, gave her some olive oil and massaged her throat where it felt hard. She seemed better, so I put her back outside that night. The next morning she hid in the corner again. There's was a hard spot above her crop. Not the actual crop. The crop was empty. I Massaged it regularly throughout the day (which she loooooved) and it finally seemed to shrink and her poop was normal again by that night (it was mostly watery before that). We put her back outside. The next day she seemed fine until afternoon so I brought her back inside. She started sneezing very occasionally and her mouth would occasionally look like its full of mucus. No mucus in nose or eyes. And she will occasionally gape like she can't breathe (no gape worms). I gave her some VetRx and that seemed to help some. Then I noticed mites on her, because they started crawling on me They weren't there the two days before when I had been holding her all day. The other two chickens in that coop also had mites. We've never had mites before. I bought their coop used a couple of weeks ago but the owner said it was empty for three years, and I painted it, and dusted the inside with DE before the birds moved in. I treated everyone with ivermectin pour on and started everyone exposed to the little bantam on antibiotics (Duramycin). Today the bantam looks much much better but I went outside and found another sick pullet. There were 2 in another coop nearby, and they didn't show any signs of mites, but I treated them anyway to be careful. The newest sick hen doesn't have any of the same symptoms. Just extremely lethargic and very week. No signs of mucus or respirator problems or crop problems, etc. but she looks really really bad. She can't seem to keep her head up long. Could she be having a reaction to any of the meds?