I'm new to the forum and I need a little help please. I have a 20 week old white leghorn hen (Lucy) that has a huge hard lump that has come up on the right side of her breast in just the last 8 hours or so. She didn't have this lump when I came home for lunch today. This lump is 5-6 times the size of her head! I've tried to find any punture marks, can't find any. Any ideas as to what this lump might be? Think its life threatening? I would greatly appreciate any help with this. I have pics, just haven't figured out how to post them yet.