Alarm clocks are starting to sound in Yellowstone National Park and not every bear is hitting the snooze button.

Park rangers have confirmed that at least some Yellowstone grizzlies have come out of hibernation. The few that have been spotted are in the northern parts of the park, including between Mammoth Hot Springs and the Tower-Roosevelt area. While rangers saw some tracks several weeks ago, no grizzlies were actually spotted until this week.

Here's hoping for a season free of tourists trying to get too close for a picture or hiking trails without taking proper safety precautions.

DB