Greater koa finch below. It had a thick black bill which allowed it to break open seed pods that were found in the trees. In historical times, its range was largely confined to the Kona District of the island of Hawaii, although it was observed in the Kīlauea area in 1895. It was much more widespread prior to the arrival of humans in Hawaii, and related species lived on other islands. In Kona, it co-occurred with the closely related lesser koa finch ("Rhodocanthis flaviceps"), and the Kona grosbeak. The lesser and greater koa finches were once thought by scientists to be the minimum
Koa Kannon no graves and thus no patrons under the danka system except for the surviving family of the seven war criminals. Koa Kannon is always requesting general help since the only thing maintaining the temple is offering money from visitors, volunteers, and members of support groups. One such association is the Koa Kannon Support Group, which was founded in 1942 by its first president Iwane Matsui and is preserved primarily by local devotees in Atami. There was in addition the Society to Protect the Koa Kannon which was established in 1994, but due to a scandal involving some of its board