I wished I had taken a picture, but I'll discribe it and you tell me if you have seen anything like it. I looked down on the floor off the coop near there food dish and found what looked like an egg covered in poop. When I picked it up and tried to peal away the poo i realized it was a large egg sized poop. I could see peices of cracked corn and bird seed that I give for treats. It it possible that all that stuff was stuck inside her vent and after a while she just pushed it out?