The Micronesian kingfisher is native to Guam, where it thrived
until the brown tree snake was accidentally introduced to the
island. The snake made easy prey of many species of birds
which were unaccustomed to snakes as predators, including the
Micronesian kingfisher, which now appears to be extinct in
Guam. The only surviving birds reside in captivity in zoos.
Many kingfisher birds actually hunt and eat fish as part of
their diet. The Micronesian kingfisher, however, survives
mostly on a diet of grasshoppers, lizards, insects, and small
crustaceans. This bird's large, strong beak is useful for
drilling nest holes in trees and rotting wood.