KIRWAN, G. M.; SCHWEIZER, M.; COPETE, J. L.

Multiple lines of evidence confirm that Hume’s Owl Strix butleri (A. O. Hume, 1878) is two species, with description of an unnamed species (Aves: Non-Passeriformes: Strigidae)

. Zootaxa, Auckland, New Zealand, v. 3904, n. 1, p. 28–50, 2015. DOI: 10.11646/zootaxa.3904.1.2. Disponível em: https://www.mapress.com/zt/article/view/zootaxa.3904.1.2. Acesso em: 2 may. 2025.