The idea of reintroducing Przewalski horses in the wild in East Asia, their last known historic range, materialized in the late 1970’s and the first release of horses took place in the early 1990’s. As of today, reintroduction was achieved in two out of three and one out of three Mongolian and Chinese proposed sites, respectively.
Inge and Jan Bouman, together with Mongolian scientist Tserendeleg Jachin, were the pioneers of Takhi reintroduction. They created the Foundation for the Preservation and Protection of the Przewalski Horse in Rotterdam in 1977 and launched the Khustain Nuruu Project. It took over a decade to enhance the genetics of Takhis, which had become largely inbred in captivity. In 1991, the Mongolian government established Hustai National Park for the purpose of Takhi reintroduction; it was then approved UNESCO Biosphere Reserve in 2002. Situated 100 km south-west of Ulaanbataar, the 50,000 ha area (excluding buffer zones and transition areas) was chosen for the quality and abundance of its wildlife. The horses enrolled in the project were bred in Holland and kept in semi-wild reserves where they could freely interact and form social bonds before being flown to Mongolia. Between 1992 and 2000, 84 Takhis aged 3-5 landed at Hustai and the first individuals were released into the wild in the summer of 1994.