I have a 2 day old chick we hatched with a problem that I don't know how best to treat. I noticed today one side of its neck/ chest is quite swollen and seems mush filled. The skin there is greenish yellow. The other side of its neck is normal. This does NOT look like a normal crop at all, and I'm not even sure it is the crop due to position. The chick is behaving normally. I'd like to treat if possible and not be told to automatically cull. Welcoming suggestions.