I offered to send it to the vet school. They weren't interested. They said, "if you hatch enough, you'll see all kinds of deformities."The chick is walking today, a little wabbly but she is figuring it out. The skin tag looks like it is drying up. I think it will most likely fall off. I will keep you posted.
I’ve never heard of a deformity like the three footed chick. How strange.