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Identifying species boundaries and phylogenetic relationships among groups of closely related species provides a necessary framework for understanding how biodiversity evolves in natural systems. Here we present a complete phylogeny of the avian genus Erythrura (family Estrildidae) commonly known as parrotfinches, which includes species threatened by habitat loss and the pet trade. Using both mitogenome and reduced-representation genome-wide nuclear DNA sequence data, we reconstructed the evolutionary history of the group by sampling all 12 recognized species, four of which had not previously been studied in a phylogenetic context. We included intra-species geographic sampling that allowed us to comment on species limits in some taxa. We recovered the Gouldian Finch (Chloebia gouldiae) of Australia which has often been placed in the monotypic genus Chloebia, as being sister to a clade …