Hawaiian honeycreepers (Fringillidae), of the subfamily Drepanidinae, these birds were once quite abundant in all forests throughout Hawai'i. The subfamily Drepanidinae historically consisted of at least 51 species. Less than half of Hawaii's previously extant species of honeycreeper still exist. Threats to species include habitat loss, avian malaria, predation by non-native mammals, and competition from non-native birds.