ʻApapane gray with small black eyes with a brown outline. The back of its wings and its tail are colored black, while back bottom is a grayish-white. Apapane are found in mesic and wet forests dominated by "ōhia lehua" ("Metrosideros polymorpha") and "koa" ("Acacia koa") trees. The best habitat also contains "kōlea lau nui" (" Myrsine lessertiana"), "naio" ("Myoporum sandwicense"), and "hapuu" ("Cibotium" spp.) tree ferns, while "māmane" ("Sophora chrysophylla") is a common species in high elevation foraging habitat. Most apapane are found at an elevation above , keeping the birds away from mosquitoes. It lives on the islands of Hawaii,
Koa wilt to the Hawaiian islands. It ranges in size from 15 to greater than 50 feet with a canopy spread of 20 to 40 feet. It has a showy white flower and blooms sporadically. Mature leaves are sickle shaped. Koa wilt is typically a fatal pathogen for its host. In only a few months, a tree may lose its entire canopy and die. Trees less than fifteen years old are typically the most susceptible. Symptoms include stains in cambium, roots, and sapwood as well as chlorosis (yellowing), canopy dieback, brown and wilted leaves, oozing sap, and bark cankers. The Koa wilt