Hello. My Barred Rock hen has been having problems for over a week now. She is about 3 years old, and her abdomen between her legs is really large and swollen, and therefore her legs are farther apart and she's walking funny. (Waddling like a duck!) I had her checked last week to see if she's eggbound but they didn't feel any eggs inside her. She's eating and drinking just fine, but is slightly lethargic. I've put her on antibiotics and a dewormer, have given her several warm 20 minute baths (her poop is crusty), and have separated her from the rest of the flock. It almost looks like someone put a water balloon between her legs. Could it be some type of cancer or tumors? Not sure what else to do for her. Thanks!