Re-introduction of the oriental white stork for coexistence with humans in Japan

Summary

The oriental white stork (Ciconia boyciana), globally endangered with 1,000 to 2,499 birds remaining, disappeared from the wild in Japan by 1971 due to pesticide poisoning, surviving only through a captive population established by Hyogo Prefecture in the 1960s that began breeding successfully in 1989. The Hyogo Park of the Oriental White Stork released 27 captive-bred storks into Toyo-oka City's rural Tajima district between 2005 and 2010, renovating disused nest towers and building local support through a Liaison Committee that included farmers, since the species' floodplain habitat overlaps intensively farmed rice paddies. Of the 24 birds not retaken into captivity, 16 survived to the 2012 breeding season, a 67% survival rate, and pairs increased from two in 2007 to nine in 2012. By 2011 a second generation of 36 fledglings had been produced, 29 still alive in 2012, and in 2012 four third-generation chicks fledged, one raised entirely without artificial feeding, the first genuinely wild-reared bird in decades. Total population reached 46. Ongoing problems include storks' dependence on supplemental feeding, poor natural prey availability from changed paddy irrigation, and inbreeding risk from the narrow founder base, prompting introduction of new captive bloodlines. The project rates itself Highly Successful, crediting the storks' adaptability, ease of pairing in the wild, and strong community engagement through the Liaison Committee.