July 27, 2024

As the summer flowers begin to appear and the days start to warm, the prairie ecosystem is soon dotted with newborn bison. These young calves, born mostly between March and June, are born with an orange-brown to reddish-brown "buff" color, which slowly darkens to adult coloration by four months.

June 29, 2024

As the summer flowers begin to appear and the days start to warm, the prairie ecosystem is soon dotted with newborn bison. These young calves, born mostly between March and June, are born with an orange-brown to reddish-brown "buff" color, which slowly darkens to adult coloration by four months.

May 29, 2024

Older and more dominant males display more aggressive behaviors than younger makes during the rut.

As the seasons change throughout the year, the size and herd dynamics of the American bison vary.
These herd variations are known as seasonal aggregation or seasonal segregation---depending on the time of year.

April 29, 2024

There will always remain uncertainty about historic temporal and spatial variability of bison occupancy and movement patterns across the full extent of the species historic range. What we do know is that there were regional areas within the historic range where:

March 29, 2024

On April 4, 2016, 87 plains bison calves from Elk Island National Park in Alberta, Canada made their way back home to the Blackfeet Reservation near Browning, Montana.
This transfer of bison symbolizes a monumental homecoming of bison whose ancestors once lived on the reservation.