López Gómez, Marí­a, Les G Underhill, and Michael Brooks. 2017. “Bird Distribution Dynamics 14 - Pied Avocet Recurvirostra Avosetta and Black-Winged Stilt Himantopus Himantopus in South Africa, Lesotho and Swaziland ”. Biodiversity Observations 8 (May):23: 1 - 10. https://journals.uct.ac.za/index.php/BO/article/view/421.