Wahle, Anna, Laura Leiss, Bernd Marcordes, Theodor Pagel, and Thomas Ziegler. “Passerine Birds in Zoos: A Global Approach on Distribution Patterns and Conservation Breeding of Threatened Birds in Zoological Institutions”. Journal of Zoo and Aquarium Research 12, no. 1 (January 31, 2024): 23–35. Accessed December 9, 2024. https://jzar.org/jzar/article/view/734.