These Ameraucana X Barred Rock chicks are about 3-4 weeks old. I have them side by side for comparison. I was admiring my little peepers just a while ago and noticed one of them is absolutely huge. FAT. I picked him up and I just couldn't believe....he feels like a balloon! He's completely full of air! And if it were jut the stomach area I'd think gas or bloat of some digestional upset..... but even his neck, over the spine, under the wings/ribs, he's got a goot extra 1" of air under the skin, separating the skin from the muscle/bone. You can see in the pics he even stands with his legs spread out all 'Howdy Partner' style. He is active otherwise, his butt is all clear, no blockage there. He doesn't seem to like being picked up, I dont know if it's uncomfortable for him or if it's typical chick drama. I can barely wrap my hand around him, he's nearly the size of a softball. And I dont pitch underhand very well so I need some way to shrink him! Her'es pics of him and his hatch mate for comparison. All the other chicks appear fine. What's going on? Has anyone had this issue int he past? Should I....pop him?