I got some new hens yesterday. The one inparticular is 1 1/2 years old, bloody poop, butt is not red, not swollen, but is featherless around vent. I don't have a lot of info but need ideas. Should I just go ahead and treat them all with sulmet? And if so how much? Oh. And when you get near her, she "sings the egg song." But I don't think that's it. I think it's stress. Do you think she could of propslasped?