A friend of mine asked me to look at one of her hens today who hasn't been laying and started limping. The hen is definitely limping on both feet and they both seem a swollen around what I would call the ankle area. My first thought was bumblefoot but it doesn't look like typical bumblefoot. There are no areas of darkness on the feet that look like the infection usually seen with bumblefoot or any sign of a wound. What else could be causing the swelling and pain? How should she treat this? Thanks!