Abstract The bacterium Avibacterium paragallinarum , previously known as Haemophilus is responsible for causing infectious coryza (IC) in chickens and other avian species. In this case report, an outbreak of occurred the Qinling area China, resulting clinical symptoms facial swelling several bird species, including Golden pheasant, Temminck's tragopan, Peafowls, three pheasants died due to prol...