Little Black Cormorant illustration
Birdsong field guide

Little Black Cormorant

Phalacrocorax sulcirostris

The Little Black Cormorant is a slender, entirely black waterbird known for its highly social behavior and efficient communal hunting techniques. It is distinguished from other cormorants by its uniform dark plumage and lack of a yellow throat pouch.

What it sounds like

Generally silent when foraging, but produces various guttural grunts, croaks, and soft hissing sounds at nesting colonies.

Reference call, compare with what you heard
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Rec. James Lambert · AustraliaCC BY-NC-NDXeno-canto

Field notes

  • Engages in highly coordinated 'pack hunting,' where large flocks work together to herd schools of fish into shallow water or towards the surface.
  • Lacks a traditional brood patch; instead, it incubates eggs by resting them on its highly vascularized webbed feet to transfer body heat.
  • Possesses feathers that are only semi-permeable to water, which reduces buoyancy and allows the bird to dive more deeply and rapidly.
  • Frequently observed in a characteristic 'wing-drying' pose, perched with wings outstretched to evaporate water from its non-waterproof plumage.
  • During the breeding season, adults develop subtle, temporary white flecks or 'nuptial plumes' around the eyes and on the neck.
Habitat
Primarily freshwater lakes, rivers, and wetlands, but also frequents sheltered coastal estuaries and mangroves.
Range
Widespread throughout Australia, New Guinea, New Zealand, and parts of Indonesia.

Similar & commonly confused birds

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