Squirrel Monkey, Costa Rica
This is another rarely seen animal from the jungles of Costa Rica, the Squirrel Monkey. He was moving along pretty quickly, and the dark shadows of the forest made for a tough exposure. With a 400mm lens and the camera at ISO 800 and f5.6, I was able to achieve a fast enough shutter (1/250) to mostly freeze his motion. For more wildlife images, check the gallery here.