Branta rhuax
Extinct species of goose
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Branta rhuax, the giant Hawaiʻi goose, is an extinct goose endemic to the island of Hawaiʻi. It was initially described as the monotypic genus Geochen, but then reassigned to Branta by Storrs L. Olson in 2013 after reexamination of the subfossil material and based on earlier DNA sequence data.