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Bison Rebound in Yellowstone

The Associated Press reported that bison that reside at Yellowstone National Park in Montana have fully recovered following the slaughter of more than 1,000 two years ago to prevent the speard of disease, park administrators said Monday.

There are 1, 100 more bison in the park than last year. Around 4,700 bison are estimated to currently be roaming the park, compared to 3,600 last year. This is the largest bison population in the world.

The bison heard reached a record high of 4,900 in the winter of 2005-2006. However, during that time 1,000 bison roamed outside of the park looking for food. When captured, they were killed as a precaution to prevent the spread of brucellosis, a disease that has been a problem in the herd at Yellowstone for years. The disease can cause female bison and cattle to abort their calves.

It is still not certain if the same problem will be faced this year, said Glenn Plumb, Yellowstone's chief of natural resources.

The problem with brucellosis will likely loom over the Yellowstone herd until the disease can be eradicated, said Amy McNamara with the Greater Yellowstone Coalition.

Brucellosis can also be carried by other large animals like elk.