ナショナルジオグラフィックのインスタグラム(natgeo) - 4月20日 22時28分

Photo by @ronan_donovan (remote camera) and text by Todd Wilkinson
Yellowstone // Wild animals do not recognize park borders. Two of Yellowstone’s iconic species, bison and elk, spill seasonally and naturally beyond park boundaries looking for food. One is welcome. The other is not.

Both bison and elk can carry brucellosis. And while bison have been regarded by Montana livestock officials as the primary brucellosis threat, in the past 30 years there have been no documented cases of Yellowstone bison directly transmitting the disease to cattle. Any outbreaks in beef herds near the park have instead been traced to elk.
But in spite of statistics, the state has taken a hard line, refusing to let Yellowstone bison stray naturally outside the park boundaries. Park managers have been forced, by court order and a bison management plan many see as flawed, to kill and harass creatures they otherwise spend most of their time stewarding with respect and dignity. Since 1985, more than 9,000 animals have been destroyed after crossing Yellowstone’s invisible and fenceless northern and western borders.
What do you think about managing wild animals like livestock?
Follow along with @ronan_donovan to see some unpublished images from this project and read the full text on the @ナショナルジオグラフィック website.

Learn more in the May issue of National Geographic Magazine - dedicated entirely to the Greater Yellowstone Ecosystem.
#natgeoparks @yellowstonenps #bison #yellowstone #wilderness #wildlife #nationalpark

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