I bought a few hens at a swap one time. They were silkies, and heavily foot feathered. Bought them late summer. Late fall I put all silkies inside in a coop. Soon one of them was limping. WaSnt sure why, looked at it carefully, couldn't see a prob. Eventually, it's foot fell off. Gross, then realized she had a zip tie embedded. Duh, I felt awful. Slowly, two others were limping. Same prob, was able to save their feet. These 3 had to be from the swap. I don't use zip ties on my birds. Moral, when u buy new birds, especially feather legs, CHECK CAREFULLY FOR ZIP TIES.