FLAGSTAFF, Ariz. — Grand Canyon National Park has decided not to extend a pilot project this fall that used volunteers to kill bison to downsize the herd.
New surveys show the herd roaming the far reaches of northern Arizona is closer to the goal of about 200.
Park officials also say the gunfire and presence of humans wasn't enough to push the bison outside the park boundaries where they can be hunted.
The park approved a plan in 2017 to quickly reduce the herd to around 200 animals.
It's now working with other agencies to develop a long-term plan to manage the massive animals.