Nearly 60 bison of questionable genetic background have been moved off the North Rim of Grand Canyon National Park and shipped to the Intertribal Buffalo Council, which in turn sent the animals to the Iowa Tribe of Oklahoma and the Cheyenne River Sioux Tribe of South Dakota.

Effective immediately, the South Rim of Grand Canyon National Park will begin phasing into greater water restrictions and conservation measures due to a series of breaks in the Transcanyon Waterline.

A heat wave baking the West might have played a role in the death of a 59-year-old Arizona woman who was on a multi-day backpacking trek through Grand Canyon National Park.

Grand Canyon National Park biologists have received confirmation that a bat collected along the Colorado River in mid-August has tested positive for rabies. Wildlife managers generally report an increase in human-bat interactions in summer months. Individuals who have had physical contact with a bat are advised to seek medical attention and be assessed for appropriate medical treatment.