Finally getting ready to introduce new chicks to older hens and saw my hens have something going on. I have 3 hens currently and 2 of them are missing feathers around their vents and had crusty poop near the vent, but not exactly on it. Their are new feathers emerging in those areas of both birds. One of them all has some missing feathers around her neck, not noticeable unless you hold her to look. Both hens with the missing feathers around the vents are not incredibly noticeable. I looked for lice/mites but I see no movement. One of my hens is a buff polish which I'd assume would be easier to see mites? but all seem to show no crawling bugs, unless I'm blind. My girls just turned 1year old in June and are polish if that helps? I have also been seeing lose feathers around the coop. So not sure if molting happens around the vents or not? any advice? will go to the store to get probiotics and see if that helps.Really need to get the chicks into the coop too.