I have a RIR hen, about 4 or 5 years old. I just noticed a day or two ago that her chest/crop was enlarged. It seemed to be full of air, when I squeezed it gently she "burped"
. After I got some of the air out, I could feel a lump of food or something, it didn't seem very different from the other hens. But it hasn't gone away, it just keeps filling up with air. Any ideas? She still seems to be acting okay. Thanks
