Harebottle, D. M., and H. D. Oschadleus. “Roadside Densities and Variations in Nest Size and Structure of Sociable Weavers Colonies Near Prieska, Northern Cape, South Africa”. Biodiversity Observations, June 2014, pp. 304-9, https://journals.uct.ac.za/index.php/BO/article/view/238.