Pacific Wren vs Bewick’s Wren

Pacific Wren

Troglodytes pacificus

How to recognise a Pacific wren?

General appearance

The Pacific Wren is a small bird of around 4-4 1/2 inches (10-11cm) in size with a shortened stubby tail. Its coloration is generally dark, contrasting with a warmer golden brown chest. The bird's flanks feature strong dark barring. It can often be mistaken for a House Wren due to its similar size, but it differentiates itself with its much shorter tail and unique voice. Rounds wings and small size makes it similar to a Sparrow.

Male vs female

There are not significant physical differences in appearance between males and females. Both genders share the same size, dark coloring and strong dark barring on their flanks. Identification between genders primarily comes down to the difference in their voices or during actions such as nesting.

Juvenile

Juvenile Pacific Wrens resemble the adults in overall appearance, but differences can be noted in subtler aspects of their coloring. Juvenile birds typically lack the richer golden-brown coloring on the chest seen in adults, displaying instead a duller shade of brown. Also, their callnote might vary slightly from adults.

Size

3.1 - 4.7 in/0.3 - 0.4 oz

Habitat

Primary habitat

The Pacific wren typically prefers dense coniferous forests, especially those in the Pacific northwest with a moist climate and an understory of dense thickets.

Additional range

In winter, it can be found in southwest woodlands and brush, or among tangles and fallen logs in woods. Uniquely, Alaskan island populations may inhabit more open areas.

Range Map

What do Pacific wrens like to eat?

Natural diet

The Pacific wren primarily feeds on a diverse array of insects, including beetles, caterpillars, true bugs, flies, and other insects. It also consumes many spiders and occasionally feeds on millipedes and snails. Additionally, this bird sometimes includes berries in its diet.

Bird feeders

While the Pacific wren may occasionally visit bird feeders, its visits are not frequent since its diet mainly consists of insects and invertebrates found in the wild. However, it might be attracted to feeders offering suet or mealworms, which resemble its natural diet.

What does a Pacific wren sound like?

The Pacific Wren vocalizes through a high-pitched, varied, and rapid series of musical trills and chatters. Its call note exudes an explosive "kit!" or "kit-kit!" sound. The call pattern of this bird is complex, flat, and undulating with a buzzing, chirping, fluting, and trilling essence which can hit high pitches. The Pacific Wren also produces a unique whistle as part of its voice repertoire.

Call

Audio by Paul Marvin

/ CC BY-NC-SA 4.0

Song

Audio by Richard E. Webster

/ CC BY-NC-SA 4.0

There's more to learn about Pacific Wren

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Bewick’s Wren

Thryomanes bewickii

How to recognise a Bewick's wren?

General appearance

The Bewick's wren is a small bird that measures approximately 5 1/2 inches or 14cm in size. It is characterized by its white eyebrow and its long tail, which it often flips back and forth. The bird's back displays a dull brown color, while its underparts are of a pale gray hue. Notable features include white corners of the tail and eastern birds which are known to be more rich in color. The wren's overall size is akin to a Sparrow.

Male vs female

There are no significant differences in the outward physical appearance between male and female Bewick's wrens. Both the sexes exhibit the same coloration and size. However, the meticulous listener can distinguish between a male and female by their song, as vocalization in Bewick's wrens differs by gender.

Juvenile

Juvenile Bewick's wrens resemble adults but are somewhat paler in coloration. The white eyebrow characteristic of adults may not be prominently seen in young birds. As with many other bird species, juveniles mature over time and gradually acquire the definitive adult plumage.

Size

5.1 - 5.5 in/0.3 - 0.4 oz

Habitat

Primary habitat

The Bewick’s wren predominantly prefers thickets, underbrush, gardens, and brushy or wooded habitats at lower elevations, including woodlands of oak and pine, and streamside groves.

Additional range

It is found in western regions in varied environments such as chaparral, suburban areas and desert washes. In eastern regions, where it is now scarce, it can be detected mainly around the edges of forests in brushy areas.

Range Map

What do Bewick’s wrens like to eat?

Natural diet

Bewick’s wrens primarily feed on insects. They consume a wide variety of insects, including beetles, ants, wasps, true bugs, caterpillars, and grasshoppers, among others. Additionally, they eat many spiders and occasionally supplement their diet with berries or seeds.

Bird feeders

While Bewick’s wrens primarily eat insects and spiders, they may visit bird feeders on occasion. At bird feeders, they might consume suet, peanut butter, or mealworms, which can supplement their natural diet, especially during colder months when insects are less abundant.

What does a Bewick's wren sound like?

The Bewick's wren produces a loud and melodious song that is similar to the warbles of typical wrens, and it also has a reminiscence of Song Sparrow. The bird's call can be characterized as falling, flat, and undulating in pattern. The types of calls it makes include a buzz, chirp or chip, flute-like sounds, trills, and whistles, all contributing to its unique vocal repertoire.

Call

Audio by Jonathon Jongsma

/ CC BY-SA 3.0

Song

Audio by Jonathon Jongsma

/ CC BY-SA 3.0

Song

Audio by Richard E. Webster

/ CC BY-NC-SA 4.0

There's more to learn about Bewick’s Wren

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Pacific Wren

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Bewick’s Wren

Pacific Wren

Troglodytes pacificus

General appearance

The Pacific Wren is a small bird of around 4-4 1/2 inches (10-11cm) in size with a shortened stubby tail. Its coloration is generally dark, contrasting with a warmer golden brown chest. The bird's flanks feature strong dark barring. It can often be mistaken for a House Wren due to its similar size, but it differentiates itself with its much shorter tail and unique voice. Rounds wings and small size makes it similar to a Sparrow.

Male vs female

There are not significant physical differences in appearance between males and females. Both genders share the same size, dark coloring and strong dark barring on their flanks. Identification between genders primarily comes down to the difference in their voices or during actions such as nesting.

Juvenile

Juvenile Pacific Wrens resemble the adults in overall appearance, but differences can be noted in subtler aspects of their coloring. Juvenile birds typically lack the richer golden-brown coloring on the chest seen in adults, displaying instead a duller shade of brown. Also, their callnote might vary slightly from adults.

Size

3.1 - 4.7 in/0.3 - 0.4 oz

There's more to learn about Pacific Wren

View full details

Bewick’s Wren

Thryomanes bewickii

General appearance

The Bewick's wren is a small bird that measures approximately 5 1/2 inches or 14cm in size. It is characterized by its white eyebrow and its long tail, which it often flips back and forth. The bird's back displays a dull brown color, while its underparts are of a pale gray hue. Notable features include white corners of the tail and eastern birds which are known to be more rich in color. The wren's overall size is akin to a Sparrow.

Male vs female

There are no significant differences in the outward physical appearance between male and female Bewick's wrens. Both the sexes exhibit the same coloration and size. However, the meticulous listener can distinguish between a male and female by their song, as vocalization in Bewick's wrens differs by gender.

Juvenile

Juvenile Bewick's wrens resemble adults but are somewhat paler in coloration. The white eyebrow characteristic of adults may not be prominently seen in young birds. As with many other bird species, juveniles mature over time and gradually acquire the definitive adult plumage.

Size

5.1 - 5.5 in/0.3 - 0.4 oz

There's more to learn about Bewick’s Wren

View full details

How to tell the Pacific Wren from the Bewick’s Wren

Visual differences

The Pacific Wren is smaller (4-4.5 inches) with a stubby tail and dark, barred flanks contrasted by a warm golden-brown chest. In contrast, Bewick's Wren is larger (5.5 inches) with a distinctive white eyebrow, a long tail with white corners, and dull brown back with pale gray underparts. Both lack sexual dimorphism. Juvenile Pacific Wrens are duller than adults, and juvenile Bewick's have less distinct eyebrows. The Pacific Wren’s tail is shorter compared to the long, often-flicked tail of Bewick's Wren.

Key differences and behavior

In the field, distinguishing Pacific Wren and Bewick's Wren behaviorally involves observing their song, habitat preferences, and nesting behaviors. Pacific Wrens are energetic and loud singers, often found in dense coniferous forests, and may pile into nest boxes to keep warm. They construct nests low and close to the ground. Bewick's Wrens, learning their songs from neighbors, prefer brushy, wooded habitats, and diverse surroundings, including suburban and desert areas. They build nests in varied cavities and may puncture competitor’s eggs. Both species primarily consume insects and occasionally visit feeders for suet or mealworms. The communal roosting of Pacific Wrens contrasts with the territorial song learning of Bewick’s Wrens, assisting in their field identification through behavior and ecological preferences.

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Pacific Wren or Bewick’s Wren?

Pacific Wren

How to recognise a Pacific wren?

Habitat

What do Pacific wrens like to eat?

What does a Pacific wren sound like?

Call

Song

There's more to learn about Pacific Wren

Bewick’s Wren

How to recognise a Bewick's wren?

Habitat

What do Bewick’s wrens like to eat?

What does a Bewick's wren sound like?

Call

Song

Song

There's more to learn about Bewick’s Wren

Pacific Wren

There's more to learn about Pacific Wren

Bewick’s Wren

There's more to learn about Bewick’s Wren

How to tell the Pacific Wren from the Bewick’s Wren

Visual differences

Key differences and behavior

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