I found on Craigslist 15 hens $90 (even if they were at the end of their days I dont mind b/c my pullets are young and I lost 6 girls like a month before laying age leaving me over run by horney males! AcK!) I instantly liked them. Barred Rock (the stippy black and white ones) a speckled Sussex, a RIR, a ......something else..... anywho.....the last one I was going to put in my pin was missing feathers and had a swollen butt. I kept her separate. I did research. ... I knew what it was. We culled her and disected her. (One of my sons wants to be a scientist so we look at the inside of bodies like we last did a freshly dead snake) it was so bad it engulfed a lung. It was partially cooked egg yolk. now im worried about the others. How likely is there more? Can I save them early? Tomorrow I plan on doing rectal on all and an ennima ....should I treat as though they all have it? Maybe deworm I read about the meds....penicillin or bentyl (how ever it is spelled) and calcium..... I have read once they lay internally they may not lay again.....I just spent $90 on these birds... some of them seem ok....and I have a couple of eggs but I expect more from 10 (some of them end up in the woods or front yard and 1 never made it to the coop....the most come back by evening though) hens then 2 eggs. I would assume a farmer ...dairy farmer or not would know something wrong with the chicken.