A Yellowstone National Park employee saw a grizzly bear Wednesday morning between Mammoth Hot Springs and Tower-Roosevelt, the first confirmed sighting this year, according to the National Park Service.
Park staff later that morning saw two more grizzlies scavenging carcasses in the northern end of the park.
When bears emerge from hibernation, they look for food, often feeding on dead elk and bison. They can act aggressively when eating carcasses.
The park service recommends carrying bear spray, hiking in groups of three or more, staying at least 100 yards away from black and grizzly bears and not running during a bear encounter.
A park news release noted that while firearms are allowed in the park, it is a violation of park regulations for a visitor to discharge one.
Certain activities are restricted in areas where there is a high density of bears along with elk and bison carcasses.
For more information on bear safety and restrictions, go to www.nps.gov/yell.