Bryson, Ursula, and Dane Matthew Paijmans. “Plumage Maturation, Ageing and Moult of the Southern Pied Babbler Turdoides Bicolor”. Afrotropical Bird Biology:<br /> Journal of the Natural History of African Birds 4 (July 19, 2024). Accessed January 15, 2025. https://journals.uct.ac.za/index.php/ABB/article/view/v4_3.