California Thrasher

Toxostoma redivivum

Conservation:

• Yellow Watch List due to its restricted range (based on North American Breeding Bird Survey)

Habitat:

• Coastal scrub

• Chaparral

• Thick, continuous shrubbery and heavy underbrush

Identification:

• Songbirds with a long tail, long legs, and curved beak

• Brown feathers with a paler color on its belly

• 12.6 inches long

• 12.2 inches wingspan

Behavior:

• Ground foragers that sweep the floor with their beaks for insects

• Typically nests and hunts in areas with heavy underbrush

• Can often be heard singing on shrubs

  • The males and females may even duet

Fun Fact!

Like mockingbirds, thrashers can copy other birds' songs and incorporate them into their own.

California thrashers are songbirds that particularly excel at imitating sounds, including other birds’ songs, coyotes’ barks, and human whistles. This wide and dynamic gamut is made possible by the thrasher’s unique bilateral control over its syrinx and specialized syringeal muscles. The syrinx is a vocal organ composed of several interconnected muscles and tubes—a complexity unique to songbirds that allows for precise control over their vocalizations. In addition to this, the syrinx is remarkably efficient at using air. British biologist Colin Tudge found that while the human vocal organ, the larynx, uses only 3% of its air, the syrinx can use nearly 100%. Additionally, the syrinx has a lower phonation threshold pressure than the larynx; essentially, to oscillate its membrane and produce sounds, the syrinx requires less physical effort and air while still making full usage of its resources (air). Current wind turbines excel at producing energy with highly intense winds. But without that wind, the turbines remain static, unable to generate energy. By mimicking the syrinx in songbirds like the California thrasher, we can develop new technology that compensates for the wind turbine’s weaknesses is crucial to transforming society to rely more on renewable resources.