A mamo or hoohoo is a bird of the genus Drepanis. These nectarivorous finches were endemic to Hawaii but are now extinct.
The Hawaiian name may be related to the name of the ʻōʻō (Moho nobilis), a bird with a similar appearance. Another name for the mamo was ʻōʻō-nuku-umu, meaning "ʻōʻō with the sucking beak".
Two species are known.
Read more about Mamo: Hawaiʻi Mamo, Black Mamo