Dave Shumway

The park stars to come alive in May.

March… the month of the wolf. With winter loosening it grip for the first time,  the park’s wildlife begins to come out, including grizzlies.

December… the crowds have left, the snow is accumulating and the animals know that they have a long cold winter ahead of them.

Enjoy these photos of black bears, grizzly bears and cubs taken during the month of May in Yellowstone National Park.

Here are some fun photos of Yellowstone in winter. A coyote makes his way through deep snow and Hoosier's Bar in Cooke City, Mont., has piles of snow in front.

The secret to photographing Yellowstone in July is to know where the action is, hike there shortly after sunrise and spend the entire day there.

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October...Fall colors, cool mornings, steam on the water, less visitors and (often) magical light.

Take advantage of the mountain passes as they are cooler, less crowded and at the peak of summer's beauty.

April can be a mystery box of opportunities in Yellowstone, as it seems each year the snow levels and activity are completely differen

Wolves are out and about, their prey is in the valley, so they too are within sight of the road that runs through the "Northern Valley."

Wolf 832AF (AKA "06" - for the year she was born) was the Alpha Female of the Lamar Canyon Pack killed on Dec 6, 2012 as part of Wyoming's wolf hunt.

Photographs of early winter in Yellowstone National Park featuring wildlife, Lava Creek, Abiathar Peak, and Undine Falls.

Fall brings about a boost to wildlife activity in the park. Most visitors come to see and photograph the elk and moose ruts.