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Overview
Isabelline bush-hen

Isabelline bush-hen

Wikipedia

The isabelline bush-hen, also known as Sulawesi waterhen or isabelline waterhen, is a large, up to 40 cm long, rufous and brown rail. The term isabelline refers to the colouration. It is the largest member of the genus Amaurornis. Both sexes are similar with olive brown plumage, pale green bill, greenish brown legs and rufous below.

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Distribution

Region

Wallacea (Sulawesi, Indonesia)

Typical Environment

Found across Sulawesi and some adjacent satellite islands where dense low vegetation meets water. It inhabits swamps, marsh edges, overgrown ditches, rice fields, forest streams, and secondary thickets. The species favors tangled undergrowth and tall grasses that provide cover for foraging and nesting. It will use disturbed habitats, provided there is thick cover and nearby shallow water.

Altitude Range

Sea level to 1200 m

Climate Zone

Tropical

Characteristics

Size35–40 cm
Wing Span50–60 cm
Male Weight0.35 kg
Female Weight0.32 kg
Life Expectancy7 years

Ease of Keeping

Beginner friendly: 1/5

Useful to know

This skulking rail is endemic to Sulawesi, Indonesia, and is the largest member of the genus Amaurornis. The name “isabelline” refers to its warm rufous-buff coloration. It is far more often heard than seen, giving loud, carrying calls from dense cover. Despite its secretive nature, it tolerates modified landscapes such as rice paddies and village wetlands.

Gallery

Bird photo
Bird photo

Behaviour

Temperament

skulking and wary

Flight Pattern

short rapid wingbeats; reluctant flier that prefers to run into cover

Social Behavior

Usually encountered singly or in pairs, remaining concealed in dense grass and reedbeds. Nests are placed low in thick vegetation near water, with both sexes likely involved in incubation and chick care. Territorial calls are given most often at dawn and dusk during the breeding season.

Migratory Pattern

Resident

Song Description

Vocalizations are loud and abrupt, including series of harsh croaks and kek-kek notes that carry through thickets. Calls often come from deep cover and may be given antiphonally by a pair.

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