I have to duckies that I'm hoping are Cayugas. They hardly leave each other alone & peep loudly when I take one out of the brooder without the other. The larger, first hatched one has started to get a bald spot in a "v" shape about an inch above his tail. When he hatched there was a spot on his back side that was a bit red and had what I can only describe as melted fuzz. It looked like nylon cord gets when you singe it with a lighter. He also had a wonkie spot on the back of his head, but he had a hard time getting out of his egg & I attributed it to that. Now I'm concerned about him. Other than that he is acting fine. I had a chicken get the same thing a few months ago and she ended up dying unexpectedly. Is this something I should be concerned about? I have blue-coat. Should I put some on him? It doesn't look red or sore or anything.