Greater Antillean Grackle illustration
Birdsong field guide

Greater Antillean Grackle

Quiscalus niger

A medium-sized, highly social blackbird endemic to the Caribbean, characterized by its glossy black plumage, bright yellow irises, and keel-shaped tail.

What it sounds like

A complex repertoire of loud, metallic whistles, harsh 'chack' notes, and high-pitched squeaks.

Reference call, compare with what you heard

Field notes

  • Displays sexual dimorphism where males are larger and more iridescent than the brownish-black females.
  • Highly opportunistic omnivore that consumes insects, small vertebrates like lizards, fruit, and human food scraps.
  • Engages in 'anting' behavior, rubbing ants on feathers to utilize formic acid as a pesticide.
  • Forms communal roosts that can number in the thousands, particularly in urban plazas or mangroves.
  • The species is divided into seven distinct subspecies isolated across different islands in the Greater Antilles.
Habitat
Open areas including agricultural fields, urban parks, gardens, and coastal mangroves.
Range
The Greater Antilles, including Cuba, Hispaniola, Jamaica, Puerto Rico, and the Cayman Islands.

Similar & commonly confused birds

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