Bewick's Wren

Bewick's Wren is a slim, active wren with warm brown upperparts, pale grayish-white underparts, and a long, expressive tail frequently held cocked upward and flicked from side to side, edged with white spots visible from below. A bold white eyebrow stripe extends from the bill well past the eye, one of its most distinctive features. Populations vary somewhat in overall color tone across the range, from grayer coastal birds to more rufous interior populations.

This species was formerly widespread across much of the eastern United States as well, but has largely disappeared east of the Mississippi over the past century, a decline attributed in part to competition with the expanding House Wren population, leaving it now primarily a bird of the West.

Key Field Marks

• Long tail, often cocked upward, with white spots visible on the underside
• Bold, long white eyebrow stripe
• Warm brown upperparts, grayish-white underparts
• Slender build with a slightly downcurved bill

Similar Species

• House Wren: shorter tail, lacks the bold white eyebrow, and is overall plainer and grayer-brown.
• Carolina Wren: larger and more richly rufous, with a buffier (not white) underside and a bolder buffy-orange eyebrow.
• Marsh Wren: has a streaked back and occurs in marsh habitat rather than brushy uplands.

Habitat

Bewick's Wrens favor brushy habitats including chaparral, scrub, woodland edges, riparian thickets, and residential gardens with dense shrub cover.

Range

The species is widespread across the western United States and parts of Mexico, with a small, declining remnant population in the Appalachians and Ozarks representing the last vestiges of a once much broader eastern range.

Migration

Most populations are non-migratory residents, though northern and higher-elevation populations may move to lower elevations or slightly south in winter.

Behavior

Bewick's Wrens are active, inquisitive birds that forage low in dense brush, often holding the tail cocked and flicking it side to side while investigating cover for insects.

Voice

The song is a rich, variable series of buzzes, trills, and clear notes, often compared favorably to the Song Sparrow's song in complexity; individual males may know a large repertoire of song variations.

Feeding

Diet consists almost entirely of insects and spiders, gleaned from dense vegetation, leaf litter, and bark crevices.

Nesting

Nests are built in cavities, brush piles, or various nooks including birdhouses, old cans, and building crevices, constructed of twigs, grass, and feathers. Clutches typically number 5-7 eggs.