Abstract
Death occurred frequently among herons of a colony in Mimuro, Urawa, Saitama, over a period from 1975 to 1978. Salmonella typhimurium of the same biotype was detected from dead birds at a high frequency. This biotype was different from that isolated usually from human beings, swine, food, or river water in the recent years. It was concluded that S. typhimurium infection had broken out in this culony of herons.
