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. 3904: 28. doi: 10.11646/zootaxa.3904.1.2.
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. 3904: 28. doi: 10.11646/zootaxa.3904.1.2.