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The mantled guereza (Colobus guereza) is a species of Old World monkey native to much of western central and eastern Africa. Although its colouring is somewhat variable across its range, it has a distinctive pelage which is mostly black, with a white facial disc and long white fringes of silky hair along the sides of its body. The tail is long and ends in a white tuft of variable length. It is a diurnal, mostly arboreal monkey, with groups moving through the canopy feeding mainly on leaves, with some fruits and other food items. This male of the subspecies C. g. guereza, also known as the Omo River guereza or the Abyssinian black-and-white colobus, was photographed in Amora Gedel Park in Awasa, Ethiopia.Photograph credit: Charles J. Sharp