I recently bought some chickies from the local feed and farm store. My poor cornish crosses have this bulge coming from the neck area. If you are looking at them it looks like a lump sitting on their shoulder. The other day I was touching it to see it it was hard or what. I touched it and some was hard but the top half of it was almost like a balloon. It felt like air was in it. The chicks didn't make any noise when I did it so I don't think they were in pain from me poking them. What is that? How do I get rid of it? I really love the site by the way. Very useful to newbies (like myself).