The Kioea (Chaetoptila angustipluma), is a species of Hawaiian Honey-eater that became extinct around 1859. It was in danger of extinction even before the discovery of Hawaii by Europeans. Even the native people are mostly unfamiliar with this species. This bird was not utilized for its feathers, nor was it used in legends or chants of the native people. Four specimens do exist in museums, however it is unknown what led to its extinction.
The Kioea was a 13 inch long bird with a long, slightly curved bill. It had a broad black stripe on its face and bristle-like feathers on the head and breast.