Attributes / relations provided by
♦ 1Co-existence and niche segregation of three small bovid species in southern Mozambique, Herbert H.T. Prins, Willem F. de Boer, Herman van Oeveren, Augusto Correia, Jorge Mafuca and Han Olff, 2006 East African Wild Life Society, Afr. J. Ecol., 44, 186–198
♦ 2Ward, P. (1965), "THE BREEDING BIOLOGY OF THE BLACK-FACED DIOCH QUELEA QUELEA IN NIGERIA". Ibis, 107: 326–349