Julian Hume / Two pairs of Koa finches. Lower pair are Greater koa finches (Rhodacanthis palmeri) extinct in 1896. The upper pair are Lesser koa finches (Rhodacanthis flaviceps) extinct in 1891.
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Julian Hume / Illustration of extinct O'ahu koa finch (Rhodacanthis litotes) in a Koa (Acacia koa) Hawaii.
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Julian Hume / Illustration of extinct Scissor-billed koa finch (Rhodacanthis forfex) in a k'puka on Kaua'i, Hawaii.
