Scissor-billed Koa-Finch (Rhodacanthis forfex)
The Scissor-billed Koa Finch is known only by subfossil remains, found on the islands of Kaua’i and Maui, the species clearly also occurred on the islands in between.
The species disappeared shortly after the arrival of the first human settlers on the Hawaiian Islands.
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References:
[1] Helen F. James; Storrs L. Olson: The diversity and biogeography of koa-finches (Drepanidini: Rhodacanthis), with descriptions of two new species. Zoological Journal of the Linnean Society 144: 527-541. 2005
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edited: 07.10.2020