My girls have begun to shake their heads as though something was crawling on them. I've picked them up and checked them out and can't see anything under their wings or on the vent area. Today I was watching them and I see a small greyish insect fly into their feathers on the neck area but they are preening constantly all over. The other hens are catching these critters as they fly onto their pen mates. I can't really tell what it is. Any ideas? Sorry but I can't show you an image or give you any really good information.
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