When did organizations like the IUCN Red List begin accepting the division between the Australian and Sunda zebra finch species?

Answer

Around 2016

The historical context surrounding the split in species classification for the zebra finch populations is marked by a specific timeline for modern recognition. Previously, both the Australian population and the Indonesian island populations were grouped together under the single species name *T. guttata*. The modern division, which acknowledges that the island populations represent a distinct lineage from their mainland Australian relatives, was officially accepted by major organizations, including the IUCN Red List and BirdLife International, around the year 2016. This taxonomic refinement was specifically based on observed evidence pertaining to plumage variations, demonstrated patterns of mate selection in captive settings, and significant genetic divergence noted in mitochondrial DNA (mtDNA) analysis.

When did organizations like the IUCN Red List begin accepting the division between the Australian and Sunda zebra finch species?

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locationZebra Finch