The curve-billed thrasher is a medium-sized mimid native to most of Mexico and to the deserts of southwestern United States. It is a non-migratory species, and throughout most of its range it is the most common desert thrasher. Several subspecies have been classified since 1827, though there is no consensus on the number. Allopatric speciation is believed to have played a major role in the variations of the curve-billed. It is grey-brown overall with a slightly curved bill, and is similar in appearance to the related Bendire's thrasher. It generally resides in desert regions of the United States and Mexico, but can inhabit areas predominately populated by humans.
Region
Southwestern United States and Mexico
Typical Environment
Occurs across the Sonoran and Chihuahuan deserts and adjacent arid scrub from Arizona, New Mexico, and Texas south through much of northern and central Mexico. Prefers xeric habitats with scattered shrubs, cacti, and mesquite, and readily uses semi-urban areas with desert landscaping. Common in cholla and prickly pear stands, thornscrub, and open washes with protective cover. In towns, it frequents hedges, parks, and feeders near dense shrubs.
Altitude Range
Sea level to 2300 m
Climate Zone
Arid
Ease of Keeping
Beginner friendly: 1/5
The curve-billed thrasher is a common mimid of the Sonoran and Chihuahuan deserts, often heard giving a sharp whit-wheet call. It can be confused with Bendire’s thrasher, but typically shows a more strongly decurved bill and brighter orange-yellow eyes. Pairs often nest in cholla or prickly pear, taking advantage of spines for protection. The species adapts well to suburbs, visiting yards with cacti and dense shrubs.
Atop a cholla cactus in Kingman, Arizona.
Perched in a mesquite tree at the Desert Botanical Garden, Arizona
On a saguaro, whose nearly open blooms will provide important food
Nest with eggs in a cactus, showing off the open cup construction
Curve-billed thrasher chicks in a nest constructed between branches of cholla cactus.
Temperament
alert and territorial, adaptable near humans
Flight Pattern
short rapid wingbeats with low, direct flights between cover
Social Behavior
Typically found singly or in pairs; forms monogamous pairs that defend territories year-round. Nests are usually placed in thorny cacti or dense shrubs, where both sexes contribute to nest building and defense. Aggressively mob intruders near the nest and will reuse favored nesting sites across seasons.
Migratory Pattern
Resident
Song Description
A rich, varied series of whistles, trills, and harsh phrases, sometimes incorporating mimicry of other birds. The signature call is a loud, ringing whit-wheet given in pairs or repeated sequences.
