Chris Geremia

Welcome sign for Bridge Bay Campground in Yellowstone National Park
Public Domain

A bison in Yellowstone National Park gored a 72-year-old woman Thursday evening.

Bison graze in Lamar Valley in Yellowstone National Park, August 18, 2016.
NPS/Neal Herbert (Public Domain)

State, federal and tribal representatives tasked with managing bison in and around Yellowstone National Park voted again Tuesday to reduce the herd size as animals migrate out of the park this winter. 

Bison graze in Lamar Valley in Yellowstone National Park, August 18, 2016.
NPS/Neal Herbert (Public Domain)

MISSOULA, Mont. (AP) — A study of grazing in Yellowstone National Park found that bison essentially mow and fertilize their own food. This allows them to graze in one area for two to three months during the spring and summer while other hoofed mammals must keep migrating to higher elevations to follow new plant growth.