I had a hen suddenly die and I took her to UCDavis for a necropsy. This is the report they gave me. Could the rest of my flock also be in danger? 1/14/14: The demise of this chicken is due to a severe systemic infection due to Gallibacterium anatis biovar hemolytica, the second most common agent in such cases after E. coli. The bacterium is isolated from the oviduct, liver and the coelomic cavity although it usually initiates as an ascending infection of the oviduct and spreads to the coelom and internal organs . Salpingitis/peritonitis/salpingoperitonitis (SPS) is the terminology applied to this relatively common condition of laying hens . There are no other findings.