Bison population increases from 4230 to 4600


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Posted by Kent (174.27.207.168) on 08:21:50 08/29/13

Yellowstone National Park has completed its annual summer bison population abundance monitoring.

The population is estimated to be 4,600 bison. The estimate is based on a series of aerial surveys.

There are approximately 3,200 bison in the Northern herd and 1,400 in the Central herd this summer. There were about 700 calves-of-the-year observed in a June aerial survey.

This year's observations represent an increase of 8.75% over last year's count. The peak population estimate of 5,000 bison was recorded in the summer 2005.

The observed rate of population change this past year is within the natural range of expectation for wild bison.




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