Red-shouldered Blackbird illustration
Birdsong field guide

Red-shouldered Blackbird

Agelaius assimilis

A medium-sized icterid endemic to Cuba, the Red-shouldered Blackbird is a wetland specialist known for its striking similarities to the North American Red-winged Blackbird.

What it sounds like

A liquid, gurgling 'kon-ka-ree' song ending in a thin, buzzy trill.

Reference call, compare with what you heard
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Rec. FREDERIC Lionel · CubaCC BY-NC-SAXeno-canto

Field notes

  • Unlike the streaky brown female Red-winged Blackbird, the female Red-shouldered Blackbird is almost entirely black.
  • It is strictly endemic to the main island of Cuba and the Isle of Youth.
  • The species was formerly classified as a subspecies of the Red-winged Blackbird (Agelaius phoeniceus) before taxonomic elevation.
  • Nesting occurs in colonies, typically within sawgrass or cattails over standing water.
  • While males look nearly identical to Red-winged Blackbirds, their song is typically higher pitched and less harsh.
Habitat
Freshwater marshes, flooded rice fields, and swampy grasslands.
Range
Cuba and the Isle of Youth.

Similar & commonly confused birds

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