I have a 3-4 year old salmon hen. I thought she had vent gleet so I brought her in and give her a bath. the lump that I thought was poop was her vent sticking out. It's the size of a golf ball. I got the poop off then used oil and pushed it back in. She pushes it right back out, hard, panting and straining. My hens haven't laid all summer. we think it was because we supplement light in winter but wasn't in the summer. but a few have started again. I felt inside her vent and I don't feel anything. But then I noticed her crop is full and hard. I massaged it awhile while she was in the bath. Will an impacted crop cause a prolapse? how do I proceed? Work on the crop first? I did put prep H on her vent. I have prebiotics in her water. I didn't give her any food in her pen.