Help! I'm new to the chicken scene and I believe one of my birds is sick! She's about a year old and she is an Easter egger. She isn't laying anymore (day 4 of no eggs from her), she won't come when I shake treats like she used to, she won't stay with the rest of the flock ( she goes off and sits by herself). I checked her butt this morning and there was a bunch of yellow,green diarrhea on her feathers and it smelled. I washed her really good. Could she have just had pasty butt? I don't think she is eating or drinking very well either.