Ok, my only white leghorn hen in a mixed flock lay its first and only egg about 2 1/2 months ago. After that she quit laying. I noticed a discharge from her rear and figured it was vent gleet. I gave her medicine and waited 2 1/2 months but she never got better. As all of my chickens are working birds I had to put here down as she was eating and drinking but not producing. When I butchered her it looked like there was an egg stuck in her anus? My question; Is there a condition that will cause a chicken to get a egg stuck and block there passage?