Hi everyone, first time posting but I've followed for a long time! The other day I noticed a weird growth on one of my chickens' feet. If you look closely, it's on her left foot. It's pointy like a toe, but smooth, not like the rest of the skin on her feet. And it has a pointy nail like tip on it. She is a year and a half old and still laying well. Here are some pictures, any ideas?