Black-Crested Macaque, Tangkoko National Park, Sulawesi, IndonesiaThis black-crested macaque (also known as the Celebes crested macaque) seemed to be telling me what she thought of me taking her picture. Actually, these monkeys were one of my favorite primate encounters in the wild and they were quite accepting of my presence. Photographed in Tangkoko National Park in Sulawesi, Indonesia, where one of the only populations still remains. They are considered critically endangered and without drastic measures their future is very uncertain. Nikon D300 with Nikkor 70-200mm lens (at 135mm) ISO 800, f/2.8 at 1/160th of a second.