Guam Rail

Gallirallus owstoni

Guam Rail (Gallirallus owstoni) — Cranes & Rails of Oceans & Seabirds.

The Guam Rail (Gallirallus owstoni) is a member of the Rallidae family found in Oceans & Seabirds. Adults weigh 226 g. The IUCN Red List lists it as Critically Endangered.

Conservation status

IUCN Red List

CR Critically Endangered

Facing an extremely high risk of extinction in the wild.

Where it fits

Class Aves
Order Gruiformes
Family Rallidae Rails, Crakes & Coots
Genus Gallirallus
Species owstoni

Where it lives

Guam (southern Mariana Is., extinct in the wild); reintroduced Rota (southern Northern Mariana Is., western Micronesia) and Cocos I. (south of Guam)

Oceans & Seabirds

Quick facts

Weight: 226 g
Diet: Omnivores
Family: Rallidae
Order: Gruiformes
Habitat: Woodland

How to identify

Similar birds

Least Concern

Biology & behaviour

Diet

The Guam Rail is a omnivore — it takes a broad, omnivorous diet of both plant and animal foods.

Behaviour

A bird of semi-open forest, it forages mainly on the ground.

Migration

The Guam Rail is largely sedentary, staying within its range year-round rather than making regular long-distance migrations.

The Guam Rail (Gallirallus owstoni) is a member of the Rallidae family, within the order Gruiformes. It occurs naturally across Oceans & Seabirds. Its distribution covers PO Guam (s Mariana Is., extinct in the wild); reintroduced Rota (s Northern Mariana Is., w Micronesia) and Cocos I. (s of Guam).

It is a large bird. Adults weighs around 226 g, with a wing length of about 11.2 cm and a tail of around 4.9 cm.

It is classified as Critically Endangered on the IUCN Red List and is a focus of conservation concern. Critically Endangered is the highest risk category before extinction in the wild.

Frequently asked questions

How big is the Guam Rail?

The Guam Rail is a large bird that weighs around 226 g.

Where does the Guam Rail live?

The Guam Rail is found across Oceans & Seabirds with a range covering PO Guam (s Mariana Is., extinct in the wild); reintroduced Rota (s Northern Mariana Is., w Micronesia) and Cocos I. (s of Guam), where it favours woodland, forest and well-treed country.

What family does the Guam Rail belong to?

The Guam Rail (Gallirallus owstoni) belongs to the Rallidae family, in the order Gruiformes.

What does the Guam Rail eat?

The Guam Rail is a omnivore — it takes a broad, omnivorous diet of both plant and animal foods.

Does the Guam Rail migrate?

The Guam Rail is largely sedentary, staying within its range year-round rather than making regular long-distance migrations.

Is the Guam Rail endangered?

It is classified as Critically Endangered on the IUCN Red List and is a focus of conservation concern Critically Endangered is the highest risk category before extinction in the wild.