Henderson, C., Pretorius, R., de Wet, D. and von Fintel, E. (2013) “Artificial nest sites used by Southern Bald Ibis Geronticus calvus”, Biodiversity Observations, pp. 19–23. Available at: https://journals.uct.ac.za/index.php/BO/article/view/185 (Accessed: 29 June 2022).