My bantam cochin is one week old today. He was feisty and active yesterday. This morning he has been off to himself. I picked him up and noticed he has a huge lump on his chest. You can see it in the pictures on his left side when I have him on his belly. The next pic shows how big the limp is. He has been in a brooder, with heat, eating medicated starter with a little yogurt. The bedding is product made from dried corn cob. I have never seen a chick try to eat it and the pellets are too big. PLEASE TELL ME WHAT I CAN DO TO SAVE THIS CHICK.