This poor girl! It's just one thing after another. Miss Rosita was a healthy robust chicken until a week or two back. Her symptoms are; -Watery poop (white and/or yellow) -Depressed acting (decreased sounds, looking tired all day, barely keeping up with the flock, reduced eating) -Weight loss -Poopy back feathers -Pea comb is dark red/purple'ish We have tried pretty much everything! She has been wormed, given destressing vitamins/probiotics, is not egg bound, does not have mites, is not injured, vent looks normal (not prolapsed, red). HELP!!! What the heck is wrong with her? Ideas? Please help?