Lerner, Heather, Les Christidis, Anita Gamauf, Carole Griffiths, Elisabeth Haring, Christopher J. Huddleston, Sonia Kabra, Annett Kocum, Meade Krosby, Kirsti Kvaløy, David Mindell, Pamela Rasmussen, Nils Røv, Rachel Wadleigh, Michael Wink, and Jan Ove Gjershaug. “Phylogeny and New Taxonomy of the Booted Eagles (Accipitriformes: Aquilinae)”. Zootaxa 4216, no. 4 (January 9, 2017): 301–320. Accessed April 12, 2025. https://mapress.com/zt/article/view/zootaxa.4216.4.1.