Hawaiʻi creeper is able to climb up and down trees. It uses its short, sharp beak to probe bark for insects residing underneath. If available, it will sip nectar from koa ("Acacia koa") or ōhia lehua ("Metrosideros polymorpha"). The breeding season of the Hawaii creeper lasts from April to July, during which female birds lay one to three eggs. Nests are hidden in a tree cavity or built on a high branch in either a koa ("Acacia koa") or a ōhia lehua ("Metrosideros polymorpha"). Eggs hatch after around thirteen days. The Hawaii creeper was put on the endangered species list in 1975;
Scissor-billed koa finch Kanaloa" ("Kanaloa kahoolawensis") and "koaia" ("Acacia koaia") were probably important food sources, and it may have eaten caterpillars and "aalii" ("Dodonaea viscosa") berries. Due to its early extinction, very little is known about this species. It is only known from fossil remains. Other Hawaiian honeycreepers are known to have become extinct or very rare due to habitat loss, introduced predators and avian diseases. It is possible the extinction of the scissor-billed koa finch also involved these factors. Scissor-billed koa finch The scissor-billed koa finch, ("Rhodacanthis forfex") or scissor finch is an extinct species of Hawaiian honeycreeper. Of the four species