- Camarhynchus heliobates
The Mangrove Finch (Camarhynchus heliobates) is clearly one of the rarest birds in the world. It is one of "Darwin's Finches" known only from the Galapagos Islands, but this species is confined to a small mangrove forest only on the island of Isabela. There are thought to be approximately 100 of these finches on earth and many conservation efforts are underway to keep the bird from going extinct
