Noticed yesterday she was distancing herself from flock and was just standing with feathers ruffled out. When I got her inside to look at her she had lots of poop on her bottom, what looked like a cut on her vent, and the whole area smelled horrible. I washed her and dried her with hair dryer then put Veterycin on her then put her in a cage on the porch. She looked fine and was eating but this morning she was dead. I think she had some kind of infection since she still smelled really bad and I feel terrible I didn't catch it earlier.