I have goggled and read BYC alllll weekend...All signs point to a sick hen having worms... My 2 yr old RIR has had poppy butt for a week...it has looked like she has a egg stuck in her vent as that area is poked out and red... I have bathed that area and she seems to like being bathed...Her poop STINKS! She just sits with her tail pointed down. Tractor Supply suggested the antibiotic DURAMYCIN-10 in her water as I had given the chicks when I got them... I have tried that for days and she is no better. She is eating yogurt and bread and sleeping in a cage isolated from her flock...Her eyes are closed. But I have noticed 2 more hens are getting POOPY BUTT now. I have read the forum and all the info seems to date back YEARS! I have FB written to our feed store and they carry Wazzine chicken wormer... Will that help at all? I have 10 Rhode Island Reds and we have had Spring like days off and on...I have never treated for worms... Egg production is down in the past 2 weeks where I normally have had Super Jumbo 4 oz eggs...my hens free-range on our acreage every day from noon to dusk... I need help fast! My vet says she does not treat chickens!