Hello out their. I have a question of concern for my newly hatched chickens. First off it is not all the chicks but about 5 have a protrusion or bump. Now this bump is located underneath the chick at what looks like where the umbilical cord, If chickens have umbilical cords. I am just trying to figure out what to do or if the chicks are okay and i am just freaking out. I have not been raising chickens long and this is about my 4th hatch. Please respond. Thanks Mike