A motion-sensing camera set up near the Appalachian Trail caught this picture of a black bear. Scientists from the Smithsonian have used these cameras to get a view of the animals living along the trail, which serves as a kind of travel route for animals along the East Coast.

Photo: Courtesy Smithsonian Institution

A motion-sensing camera set up near the Appalachian Trail caught this picture of a black bear cub.

Photo: Courtesy Smithsonian Institution

A motion-sensing camera set up near the Appalachian Trail caught this picture of a white-tailed deer.

Photo: Courtesy Smithsonian Institution

A motion-sensing camera set up near the Appalachian Trail caught this picture of a coyote. Scientists from the Smithsonian have used these cameras to get a view of the animals living along the trail, which serves as a kind of travel route for animals along the East Coast.

Photo: Courtesy Smithsonian Institution

A motion-sensing camera set up near the Appalachian Trail caught this picture of a horse's tail. The animal may be one of a population of wild horses near Mt. Rogers in Virginia.

Photo: Courtesy Smithsonian Institution

A motion-sensing camera set up near the Appalachian Trail caught this picture of a bobcat. These wild cats are among the most elusive animals in these woods, rarely seen by people. Scientists from the Smithsonian have used these cameras to get a view of the animals living along the trail, which serves as a kind of travel route for animals along the East Coast.

Photo: Courtesy Smithsonian Institution