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Wind Cave bison herd : ウィキペディア英語版 | Wind Cave bison herd
The Wind Cave bison herd is a herd of 250–400 American bison in Wind Cave National Park, South Dakota, USA. It is believed to be one of only four free roaming and genetically pure herds on public lands in North America. The other three herds are the Yellowstone Park bison herd, the Henry Mountains bison herd in Central Utah, and on Elk Island in Alberta, Canada. The Wind Cave herd are of the Plains bison subspecies (''Bison bison bison''). ==History== The American bison (''Bison bison'') once numbered in the millions, perhaps between 25 million and 60 million by some estimates, and they were possibly the most numerous large land animal on earth. However, they were hunted to near extinction throughout North America by the late 1880s. The Wind Cave bison herd was started with 14 bison from the New York Zoological Society and with six animals transplanted from the Yellowstone Park bison herd. In addition, in the 1960s, one single bull bison was received from Theodore Roosevelt National Park.〔(【引用サイトリンク】 first = John William )〕 The Yellowstone Park bison herd was the last free-ranging bison herd in the United States and the only place where they did not go locally extinct, so they have become at least part of the foundation stock for many other herds, including the Wind Cave bison herd. The Wind Cave population has, in turn, served as the foundation stock for the Tallgrass Prairie bison herd in Kansas.〔http://www.nps.gov/tapr/naturescience/upload/TAPRBisonFact2012.pdf〕
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Wind Cave bison herd」の詳細全文を読む
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