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Collar, N.J. and Kirwan, G.M. 2026. Eos challengeri Salvadori, 1891: the oldest available name for the northern subspecies of Red-and-blue Lory E. histrio (Aves: Psittaculidae). Zootaxa. 5799, 3 (Apr. 2026), 589–593. DOI:https://doi.org/10.11646/zootaxa.5799.3.10.