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    MANGROVE FINCH 

    Population: 30–200

    Habitat: This small brown finch is native to the mangroves of the Galapagos Islands and Ecuador.

    Why They Are Endangered: Disease and predation are the two main factors contributing to the decline of the Mangrove Finch. A parasite that can be found in the finches' nests not only affected the chicks' survival, but introduced predators such as rats, cats and Smooth-billed Anis. (Durrell)