The last 2 days one of my hens has been limping/hopping when she runs, but not every time. She's 18 weeks. I bought off Craigslist bug u know they came from a hatchery here in Wisconsin. Eating, drinking,being social and I believe she is laying fine (still figuring out who all is going). We free range all day. Feet look normal, not cuts and doesn't act funny when I hold her or touch the pad of her foot. Could she have just stepped funny? Chicken newbie here.