One of my hens has started to walk funny. It seems like she can't help but stand up straight. She seems bottom heavy. Her abdomen is firmer than the rest of the hens and a little bigger. I checked to see if she was eggbound but didn't feel anything. About her: 2 years old. Laid wrinkled eggs, then molted at about a year old and has never laid again. I posted about it and its probably a defective shell gland. Ever since she stopped laying she's looked a little plumper but that's it. I'm thinking her machinery might be trying to produce eggs.