Hoary Marmot, WashingtonHoary marmots, often called “whistle pigs” for their high-pitched alarm calls, are a common sight among the alpine meadows and rocky slopes of Mount Rainier in Washington State. These large ground squirrels spend the short summer season feeding and basking in the sun to build fat reserves for their long hibernation, which can last up to eight months. Social and vocal, they often perch on rocks to watch for predators. Nikon D300 with Nikkor 200-400mm lens (at 400mm) ISO 400, f/8 at 1/500th of a second.