I have just got 3 ex battery hens. One has a floppy comb but seemed ok. Now she is being bullied by one of the others. Its drawn blood. So I used Stokholm tar and it seemed to calm down. She was eating fine and staying out of the way. Today, I noticed some blood in the coop. I checked on her but there were no visible wounds on her or the others. I watched her for a little while and noticed she was straining to poop. She stands almost vertical and makes breath-like noises. She is passing a few bits but her bum looks very red as though its turned inside out.
She is in my house at the moment being very nosy but freezes when she tries to poop. All the hens have had ACV and vermex too. Really not sure what to do!