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The Philadelphia Zoo has been a leader in the conservation of this endangered species since the Guam Bird Rescue Project was initiated in 1983. The Zoo currently holds seven Micronesian kingfishers (four males and three females), although most of them live off-exhibit to encourage breeding. Learn more about Philadelphia Zoo's kingfisher conservation projects.
One of the Micronesian kingfishers is currently living in our Pacific Islands exhibit of the McNeil Avian Center:
The Stud: Male, hatched on June 16, 2009 at the Brookfield Zoo in Chicago. He arrived here on October 13, 2011.
McNeil Avian Center
The Micronesian kingfisher is a medium-sized kingfisher with a large, strong beak. The Guam subspecies is sexually dimorphic in color with males blue above and rusty cinnamon below and females similar but with white underparts. The Guam Micronesian kingfisher is no longer found in the wild where it was driven almost to extinction by predation by the brown tree snake (Boiga irregularis) that was introduced to the island. In the 1980’s the Philadelphia Zoo in conjunction with other US zoos and the Guam Division of Aquatic and Wildlife Resources, captured as many of the remaining birds that could be found on Guam (29 in all) to establish a captive breeding population in the hopes of re-introducing birds to the wild someday. Recently, a captive breeding population has been established on Guam as we move closer to the ultimate goal of having Micronesian kingfishers flying wild once again on Guam.
Unknown in the wild. Captive birds live on average about 10 to 12 years but some birds have lived into their 20s.
Before it disappeared on Guam, the Micronesian kingfisher had a reputation for aggression towards other birds and was accused of being a chicken thief. Although the Guam Micronesian kingfisher was not well studied in the wild before it disappeared, based on research on related Micronesian kingfisher on other Pacific islands and the behavior of the birds in captivity, Guam kingfishers appear to be highly territorial birds that establish multi-purpose territories year round.
Like some other species in the kingfisher group (e.g., Kookaburra) Micronesian kingfishers live in cooperative breeding groups consisting of a breeding pair and one or more older offspring. Pairs share the task of excavating a hole in a tree to use for nesting. Clutches are most commonly 2 eggs but can range from 1 to 3 eggs. Both the male and female share incubation duties and feed chicks once they hatch. Eggs hatch about 23 days after laying and chicks fledge from the nest about 30 days later.
Approximately 8 inches in length
Adult weights range from approximately 2 to 3 ounces.
In the wild, Micronesian kingfishers feed mainly on small lizards, insects and occasionally small mammals and crustaceans. Wild kingfishers will catch a lizard and carry it to a tree limb where the bird will beat the lizard against the limb until dead prior to eating it. At the Zoo, the Micronesian kingfishers are offered a base diet of lizards, baby mice (pinkies) and supplements. The enrichment portion of the diet includes a variety of insects. Although the lizards offered at the Zoo are already dead, the birds will still carry them to a tree and beat them before eating.
Woodlands and forests on the island of Guam. The Guam Micronesian kingfisher is endemic to Guam (it is found nowhere else).
The Guam Micronesian kingfisher (Todiramphus cinnamominus), “sihek” in Chamorro (native language of Guam), was once found throughout the island of Guam in the Mariana Islands. Along with most of Guam’s endemic birds, the Guam Micronesian kingfisher declined dramatically in the 1970s and '80s as a result of predation by the introduced brown tree snake (Boiga irregularis).
The brown tree snake is native to Papua New Guinea and likely arrived on Guam as a stowaway on ships arriving in Guam during or shortly after WWII. The wildlife on Guam was unprepared to defend against this invasive snake as there is only one native snake on Guam, a small blind snake that does not prey on birds. By 1988, many of the native birds of Guam had been eliminated by snake predation, primarily on their nests (chicks and eggs). To save Guam’s endemic bird species from certain extinction, the Philadelphia Zoo partnered with the US Fish and Wildlife Service to form the Guam Bird Rescue Project.
Learn more about Micronesian kingfisher conservation efforts at Philadelphia Zoo.
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