 In 1977, the Foundation for the Preservation and Protection of the Przewalski Horse was founded in Rotterdam, the Netherlands, by Jan and Inge Bouman.The foundation started a program of exchange between captive populations in zoos throughout the world to reduce inbreeding, and later began a breeding program of its own.As a result of such efforts, the extant herd has retained a far greater genetic diversity than its genetic bottleneck made likely.