I have seven brown leghorns chicks that I "rescued" from the local feed store. They had the worst pasty butt I'd ever seen. The poop was well over an inch thick on some of them. I didn't think a couple would make it, but I diligently cleaned their bums for the first week and they all seem to be happy and thriving. I've had them about a week and a half and I'd guess their age to be around two to three weeks. My question is, from the beginning, they have been eating their own feces. They were on the local feed store feed which was a mash. Over a couple of days I transitioned them to Purina chick starter. In addition, we mix up their water between Avia Charge 2000 and plain water. I thought it would end when they were transitioned to the new feed. It didn't. After five days or so, I added shavings to the brooder and I thought it would end. It did for a day or so, but now it has started again. Whenever they hear one poop, they all run over to it and start fighting over it. If I see it, I immediately remove it. We haven't had this problem with any other chick(s) we've raised. I think it has to do with either the feed they were on or the environment they were first in. Does anybody have any ideas on how to end this? Or is this something they are going to do their whole lives? They don't seem to be outgrowing the behavior.