We currently have 4 Isa Brown hens and previously lost one to Egg Peritonitis who was put to sleep by the vet. Recently when cuddling one of our girls I noticed she has overall become fatter in the last month or two, but she was never a big bird so it has been a little strange to me. While she has put on weight overall, comparing her bottom to the others, hers is more squishy/less firm. She regularly goes to the nest to do an egg, but there is nothing there. None of our girls are laying anymore, though 2 "pretend", but this girl I'm worried about because of her increased size and she was always a petite bird compared to the others. I'm contemplating taking her to the vet for a check up even if he says she has it and there is nothing we can do. She's the favourite hen so if we can do anything for her we will. Has anyone had a chicken recover from egg peritonitis? Almost everything I've read says there is no cure.