The Mangrove Finch, Camarhynchus heliobates, is one of the so-called Darwin's finches. It is restricted to the Galápagos Islands. It was found on the islands of Fernandina and Isabela, but recent surveys have failed to record the species on Fernandina. It has been classified as critically endangered by BirdLife International, with an estimated population of between 60 and 140 located in two large mangroves on Isabela.