Image via Macaulay Library
Guam Rail
- Scientific name
- Gallirallus owstoni
- Family
- Rallidae
- Conservation status
- Critically endangered
- Habitat
- Wetland marsh
- Wing shape
- Rounded
- Tail shape
- Short
Where it came from
The Guam rail, or ko'ko' in Chamorro, is a flightless bird endemic to the island of Guam. Evolutionarily isolated, it developed its characteristic short tail and rounded wings, which are indicative of its ground-dwelling lifestyle in the dense island understory. By the late 20th century, the species faced near-total extinction following the accidental introduction of the predatory brown tree snake after World War II.
The survival of the species is attributed to a pioneering conservation effort that began in the 1980s, when the last remaining wild individuals were captured to establish a captive breeding program. Managed by organizations including the Association of Zoos and Aquariums, this program has successfully maintained the genetic diversity of the population. While reintroduction efforts on Guam remain complex due to the ongoing threat of invasive snakes, the species serves as a vital symbol of island biodiversity and the challenges of ecological restoration.
Written by Pi, the helpful collecto.rs AI
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About Guam Rail
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