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;
Scotorythra paludicola State Park. Laboratory feeding trials of these larvae showed that they could complete their development at the same rate on both the normal host ("Acacia koa") and the invasive tree ("Falcataria moluccana"). Three other exotic tree species, "Acacia confusa", "Prosopis pallida", and "Leucaena leucocephala" were not suitable host plants and all the larvae tested on these species died after 5 days of feeding. Scotorythra paludicola Scotorythra paludicola, the koa looper moth, is a moth of the family Geometridae. It was first described by Arthur Gardiner Butler in 1879. It is endemic to the Hawaiian islands of Kauai, Oahu, Maui and