This is a 3 day old chick. This growth is the size of a fignger to the 1ts joint. It is not a blocked/pasted poo hole. She eats,drinks,poos fine. It is causing her to have a hard time walking on the right legs. Is mostly hops on the left leg. Does anyone have any idea what it is or could be? I thought maybe an unabsorbed yolk sac, but i have no experience with chicks yet. Please any advice would be awesome.