My four girls seem to be healthy- eating (enthusiastically), drinking, laying, scratching around, etc. I find some watery poops in the run but also plenty of firm poops as well. However all four of them have poop caked all over their butt feathers. I've only had them a few months but this didn't seem to be an issue until a few weeks ago. Diet has not changed. Should I be worried? I'm waiting until the weather warms up a bit then I plan on bathing them but... new chicken mama is worried that there might be something off!