Great-Tailed Grackle (Quiscalus mexicanus) lives in open grasslands across North and South America. It feeds on insects and seeds. Its conservation status is Least Concern.
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Great-tailed grackles exploded onto the North American map, expanding their breeding range by over 5,500% between 1880 and 2000 as they followed urban and farm corridors. Their foraging grounds span open pastures, wetlands, mangroves and chaparral, and the species thrives wherever agriculture or cities reshape the landscape. This rapid spread, echoed by a documented >2.5% annual range increase over the past three decades, shows how flexible birds can turn human development into a continent-wide highway.
At 38-46 cm long (15-18 in) and weighing 203-265 g (7.2-9.3 oz) in males, the great-tailed grackle is larger than a starling yet still smaller than a crow, with a wingspan of 48-58 cm (19-23 in). Females are lighter, 115-142 g (4.1-5.0 oz) and shorter. Their long, keel-shaped tail can be folded vertically.
Great-tailed grackles boast an unusually large vocal library, rattling from "sweet, tinkling notes" to a "rusty gate hinge" all year long. Males wield a broader palette of calls, while females mostly chatter, though a female has been recorded singing a territorial song. Their noisy presence earns them the label of pest species.
Between 1486 and 1502, Aztec Emperor Ahuitzotl shipped great-tailed grackles from the Gulf Coast to Tenochtitlan, marking the earliest recorded human-mediated bird introduction in the Western Hemisphere. The Florentine Codex notes this move, making it one of the first peer-reviewed ornithological accounts in the New World and illustrating how cultural value, iridescent feathers for decoration.
When faced with the classic Crow and the Pitcher puzzle, great-tailed grackles drop stones into a water-filled tube to raise the level and bring floating food within reach, showing they can solve multi-step problems.
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In the scorching landscapes of its native habitats, the Great-Tailed Grackle reigns supreme, its iridescent feathers glimmering like polished onyx as it strides with purpose, its long, keel-shaped tail feathers trailing behind like a dark, silken banner. With each deliberate step, it navigates the sun-baked terrain with an air of confident nonchalance, its sharp, black eyes ever-vigilant for the next morsel to snatch from the dusty earth. As it moves, its glossy plumage seems to drink in the light, radiating a mesmerizing sheen that belies the bird's reputation as a clever, opportunistic forager.
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