I just opened the coop this morning and it looked like there was blood clots in several poops?? Not sure who it belongs to. My chickens range in age. I've got 14 weeks, 17weeks, & 22 weeks. The 17 and 22 week olds are laying eggs. Everyone is eating and drinking and laying just fine. Any ideas what it could be?? I found this in different spots in the coop so I'm wondering if it's from different chcikens. Thanks!!