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(Drepanididae), a family of birds of the order Passeriformes. The body is 11-21 cm long. Hawaiian honeycreepers are greenish, yellow, red, or black. All of them have a musky smell. The birds are a remarkable example of adaptive radiation within one family: in correlation with their predominant food (nectar and flower pollen, insects, or seeds), some species of Hawaiian honeycreepers have a thin, curved beak, others have an awllike beak, and still others have a massive beak like a parrot’s. The birds are found in trees and shrubs. There are 21 species, found only on the Hawaiian Islands.