The breeding biology of the Rosy-faced Lovebird Agapornis roseicollis was investigated in its natural habitat at three Namibian localities: Claratal, Hohewarte and Haris. The lovebird nests in colonies often shared by Sociable Weavers Philetairus socius. Birds nested in trees at a mean height of 3.8m, on telephone poles at 6.6m, windmills at 11.2m, and artificial nest boxes at 3.3m. Acacia erioloba and A. karroo were most often used for nest location. Nest tree habitats had low density vegetation with short (4m) trees, mostly A. erioloba, spaced at distances of about 10m.