Lesser Swamp Warbler

Acrocephalus gracilirostris

Nondescript, long-tailed, long-billed warbler of wetlands. Varies geographically, with the back being olive-brown to rusty-brown, and the underparts pure white to pale brown. Found in reedbed wetland habitat, including papyrus. Far less secretive than many marsh-dwelling warblers; often hops about in the open. Frequently sings a variable, complex mix of raspy and musical notes that usually ends in a trill. Smaller than Greater Swamp Warbler, larger than African Reed Warbler, and shorter-winged than Great Reed Warbler.

Identification

The lesser swamp warbler is a plain-coloured smallish bird 14–16 cm long and weighing around 20 g. Its upperparts are rich brown, and it has a white supercilium. The underparts are white, with a rufous wash to the flanks. The long, strong bill has a slightly down-curved upper mandible; it is blackish-yellow with a yellower base. The legs are blue-grey and the eyes are brown. Adults of both sexes and juvenile birds are very similar in appearance.<p>The song is rich and melodious, a series of bubbly phrases that include trilling notes, cheerup chee trrreee and a large number of variations, with pauses between phrases.

Taxonomy

Genus: Acrocephalus; Family: Acrocephalidae; Order: Passeriformes.

Scientific name
Acrocephalus gracilirostris
Authority
(Hartlaub, 1864)
Order
Passeriformes
Family
Acrocephalidae
Genus
Acrocephalus

Range and habitat

Migration
Resident species

Behavior

Migration pattern: Resident species.

Conservation

Population trend: stable.

Population trend
stable

Photos

Distribution

Bird Calls

Other Birds

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