Black-backed Swamphen illustration
Birdsong field guide

Black-backed Swamphen

Porphyrio indicus

The Black-backed Swamphen is a large, colorful rail distinguished by its deep black upperparts and massive red frontal shield. Native to Southeast Asia, it is a highly social wetland bird known for its dexterity and bold plumage.

What it sounds like

A loud, raucous series of nasal shrieks, honks, and rhythmic grunts, often sounding metallic or mechanical.

Reference call, compare with what you heard
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Field notes

  • Differentiated from other Porphyrio species by its jet-black mantle and scapulars which contrast with its turquoise-blue breast.
  • Possesses exceptionally long toes that distribute its weight, allowing it to walk effortlessly over floating aquatic vegetation.
  • Commonly uses its feet like hands to grasp, pull, and hold food items while eating.
  • Exhibits a frequent tail-flicking behavior that flashes its white undertail coverts as a social or alarm signal.
  • Often engages in cooperative breeding, where multiple members of a social group assist in defending the territory and feeding chicks.
Habitat
Freshwater marshes, reed beds, lake margins, and wet grasslands with dense emergent vegetation.
Range
Southeast Asia, including the Malay Peninsula, Sumatra, Java, Bali, Borneo, and Sulawesi.

Similar & commonly confused birds

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