You're hiking in along a trail in Yosemite's high country when, out of the corner of your eye, you see a flash of brown fur! What was that?! More often than not, this is all we see of the American marten in the park. These quick and agile creatures bound from rock to rock and climb trees with with great precision and grace. Martens are omnivorous, hunting for birds and rodents and supplementing their diet with berries and seeds in late summer. Have you seen one in the park?