Great Green Macaw illustration
Birdsong field guide

Great Green Macaw

Ara ambiguus

A massive, critically endangered Neotropical parrot distinguished by its brilliant lime-green plumage and heavy dependency on the Mountain Almond tree.

What it sounds like

Extremely loud, raucous, and guttural shrieks, often transcribed as a deep, harsh 'aark-raark'.

Reference call, compare with what you heard
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Field notes

  • It is the largest macaw within its range, reaching up to 90 centimeters in total length.
  • The species is a specialist feeder, relying heavily on the extremely hard nuts of the Dipteryx oleifera tree.
  • Population numbers are critically low, with estimates suggesting fewer than 1,000 mature individuals remain in the wild.
  • There are two recognized subspecies, with Ara ambiguus guayaquilensis being isolated to a small region in western Ecuador.
  • They are known to engage in seasonal altitudinal migrations to follow the fruiting cycles of various forest trees.
Habitat
Humid lowland rainforests and occasionally deciduous forests or edge habitats.
Range
Central and South America, ranging from eastern Honduras to northwestern Colombia and western Ecuador.

Similar & commonly confused birds

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