Egg Yolk Peritonitis, sometimes referred to as Egg Peritonitis (or ‘EYP’ for short), is a common condition seen in backyard hens of all ages, from the point of lay onwards. It is an infection established within the coelomic cavity of hens, caused by the presence of an ectopic yolk within the coelom (main body cavity). … Continue reading Egg Yolk Peritonitis