Bighorn Lambs, Badlands National Park, South DakotaYou can see just how much bighorn lambs blend in with their surroundings in Badlands National Park. Bad for any would-be predators. Very good for the lambs. These two were having a good old time chasing each other up and down the sides of these eroded buttes, the dominant landscape feature in the park. Nikon D800 with Nikkor 200-400mm lens (at 400mm) ISO 1600, f/4 at 1/320th of a second.