The yellow-backed duiker (Cephalophus silvicultor) is the largest of all duikers; a group of animals which get their name from the Afrikaans word for ‘diver’, referring to their habit of diving into dense vegetation for cover. As well as its larger size, the yellow-backed duiker is distinct from other duikers due to the patch of yellow hairs on its rump, which is conspicuous against the rest of its blackish-brown coat. The body of the yellow-backed duiker is higher at the rump than at the shoulders, and the head is long and wedge-shaped. Both sexes bear short, cylindrical horns which are ribbed at the base, and a crest of longer, dull chestnut hairs sits between the horns. Unlike most other duiker species, the yellow-backed duiker does not constantly wag or ‘flag’ its tail.