Hello! I am concerned with one of my 5 hens. She's a 6 month old black sex link. For the past few days, she has been walking funny, almost like a limp. She doesn't run across the yard like crazy anymore when I come outside with treats, but will just walk in her new ungainly way. Today she didn't even finish the walk across the yard, but sat down in the grass. She looks normal, is eating well and laying an egg a day. I haven't seen any abnormal droppings. When I pick her up, it doesn't bother her any more than usual and if I examine her legs, they don't seem to cause her any pain. My other 4 hens are fine and not picking on her. She's now at the point where she walks around, but will stop and sit in the grass often. As she sits there, she pecks around for bugs, then will get up and move on if the rest of the flock moves away. I saw her jump down from the stone wall and seemed to take a lot out of her; she sat on the ground for a while before finally walking again. At night the hens are closed up in their coop, but during the day they free range around our large yard, plus the neighboring field. They share a feeder and waterer. All of them were vaccinated as chicks and we don't use any pesticides (nor do our neighbors). Should I separate her from the flock? What could be the problem? Thanks in advance for any advice or help!