I noticed our 2 year old RIR was standing funny and walking funny. She walks with her legs spread apart like she has to poop or lay an egg. She had a pasty butt also. Got her out of the pen last night and hosed off her butt. I couldn't feel anything. Put her back in the coop and noticed that her crop was huge. I thought for sure we would have a dead hen this AM, but she's still with us. Any suggestions?