Cozumel Thrasher illustration
Birdsong field guide

Cozumel Thrasher

Toxostoma guttatum

The Cozumel Thrasher is a critically endangered mimid endemic to Cozumel Island, distinguished by its heavily spotted underparts and secretive nature. It is one of the rarest birds in the world, with its population decimated by major hurricanes and invasive species.

What it sounds like

A complex, melodic song consisting of varied, scratchy phrases and warbles, often repeated in a style typical of the genus Toxostoma.

Reference call, compare with what you heard
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Rec. Chris Benesh · MexicoCC BY-NC-NDXeno-canto

Field notes

  • It is the most critically endangered bird species in Mexico, with no confirmed sightings of a living individual since 2004.
  • The species' population plummeted by over 99% following the catastrophic impact of Hurricane Gilbert in 1988.
  • Unlike many other thrashers, it is entirely restricted to a single island off the coast of the Yucatan Peninsula.
  • The introduction of boa constrictors to Cozumel in the 1970s is believed to have contributed significantly to its decline through nest predation.
  • It is morphologically similar to the Long-billed Thrasher but is noticeably smaller and features more prominent, teardrop-shaped ventral spotting.
Habitat
Dense tropical deciduous and semi-deciduous forest undergrowth and thickets.
Range
Cozumel Island, Mexico.

Similar & commonly confused birds

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