My 1.5 week old White Wyandotte chick has a weird thing on the side of its knee joint and I am not sure if it is just stuck on poop or what? The stuff that is stuck on has a separation in the middle and outmost feels like a bone? And also has fuzz growing on it it looks like? I am worried because it can’t walk very well and I am afraid it is a disease or tumor or something. It is also swollen.