My rescue legghorn is acting completely normally. She is about 2 1/2 years old (guessing). She stopped laying any eggs at all last April when it appears that Mereks hit my flock (lost one chicken, necropsy was possible Mereks). She often still sits in the nesting box, I thought out of habit. I'm just fine with her not laying because she was laying very thin shelled eggs, no calcium would fix, and I was afraid one would break in her. She started losing feathers about a month ago, which I attirbuted to molting. I got a glimpse of her underside to today. It looks distended and is a little warm. No feathers! Her abdomen is firm but not hard. I had another chicken die being egg bound and it is a different feel to the abdomen. Here the distention is generalized. No egg to be felt. Here are photos. Any advice would be appreciated.