Paku (Bakau) is an endangered language of Borneo. It is closely related to the Malagasy language spoken on Madagascar. Most of the remaining speakers are also fluent in other languages.
^Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2017). "Paku". Glottolog 3.0. Jena, Germany: Max Planck Institute for the Science of Human History.