Photos by joelsartore | Meet Amber, a crested mona monkey I photographed while visiting Park Assango in Gabon. You’ll notice that the fur around her face is yellow marked with wide black stripes running from beside her eyes over to her temples and across the center of her forehead. This pattern forms a distinctive small crest, the defining feature that gives Amber’s species its common name. To see more species featured in the Photo Ark, follow me, joelsartore. #PhotoArk