I have an astrolorp and I think she has impacted crop. Her abdomen is enlarged and she had a hard mass there about the size of a tennis ball. My husband massaged her last night and we fed her water with a syringe to help loosen it up. We also tried to make her vomit whatever is stuck. It worked a bit. The mass is not has hard but still there. She is separated from the rest of my hens for the time being until I can get her back to herself. Anyone know what else I can do to help her???