DE SWARDT, Dawid H. Lesser Grey Shrike and Common Fiscal impaling prey. Biodiversity Observations, [S.l.], p. 1 - 2, aug. 2016. ISSN 2219-0341. Available at: <https://journals.uct.ac.za/index.php/BO/article/view/350>. Date accessed: 18 jan. 2019.