Using their heads to survive winter

It seems crazy to spend the winter living on a mountaintop, but the wildlife of Yellowstone National Park do that every year. And they somehow manage to thrive. Life finds a way.

While I’ve lost count of the number of times I’ve visited Yellowstone, I recently got a chance to make my first winter visit. I got the full experience. Nearly a foot of snow one night. Temperatures as cold as 9 below — Fahrenheit, not Celsius. And I developed a new respect for the animals that I’d photographed so many times before in less challenging weather conditions.

Battle in the sky: Bald eagle and fox

There is no question that bald eagles are skilled hunters. They can spot a fish from a mile away and fly to it in under a minute.

But they’re also masters of something scientists call kleptoparasitism: the art of stealing food from others. In my book The Year of the Eagle, I documented bald eagles stealing food from crows, great blue herons and even other eagles.

A couple of days ago, however, I captured an especially dramatic act of thievery. I saw a bald eagle steal a rabbit from a young red fox. Even more impressive: at times, this battle played out more than 20 feet in the air.