Was just at a friends because one of her hens are sick and she didn't know what to do. When I picked her up and turned her over, her backside was slimy and wet and she felt underweight and there were small worms squirming in and out everywhere.... I've never had this happen and don't know what to tell her. Are these internal parasites? They were quick moving about 1/4" long. Thank you for any help. I'm assuming it's internal worms of some sort. I feel so bad for them.