Varied Thrush

About

The Varied Thrush is a medium-sized songbird known for its striking orange and slate-gray plumage, particularly the bold black breast band. It is a denizen of dense, moist coniferous and mixed forests of western North America, often foraging on the forest floor for invertebrates and berries. Its ethereal, haunting song is a distinctive sound of its woodland habitat.

Size & lifespan

Length

20-26 cm (8-10 in)

Wingspan

34-42 cm (13-17 in)

Weight

65-100 g (2.3-3.5 oz)

Lifespan

Up to 10 years in the wild

Diet

Omnivore, primarily insects and other invertebrates during breeding season, and fruits/berries in fall and winter.

Physical characteristics

Plumage

Adult males have a slate-gray back, head, and wings, with a prominent black breast band and a black facial mask. The underparts, wing bars, and supercilium (eyebrow stripe) are a rich rufous-orange. Females are similar but duller, with a browner-gray back, a less distinct or brownish breast band, and paler orange underparts. Juveniles are mottled brown with a streaked breast and a less defined breast band, gradually acquiring adult plumage.

Beak shape

Slender, pointed, and dark (blackish) with a slightly paler base on the lower mandible.

Eye color

Dark brown.

Leg color

Dark brown to blackish.

Distinguishing features

The combination of slate-gray and rufous-orange plumage with a distinct black breast band is unique among North American thrushes. The black facial mask and two rufous wing bars are also key identifiers.

Juvenile appearance

Juveniles are heavily mottled brown on the back and head, with a streaked breast and flanks. The breast band is often incomplete or indistinct, and the rufous coloration is duller. They gradually molt into adult-like plumage during their first fall.

Seasonal changes

Plumage generally remains consistent year-round, though colors may appear slightly brighter after the fall molt and become somewhat worn and duller by late spring.

Sexual dimorphism

Males are more brightly colored with a darker, more defined black breast band and facial mask. Females are duller overall, with a browner-gray back and a less distinct, often brownish, breast band.

How to identify

1. 1

   Plumage Pattern

   Look for the unique combination of slate-gray on the back and head, rich rufous-orange on the underparts and wing bars, and a bold black breast band. This pattern is diagnostic.

2. 2

   Black Breast Band

   The prominent black band across the chest is a key field mark, especially in males. Females have a duller, often brownish, and less distinct band.

3. 3

   Black Facial Mask

   Males have a distinct black mask extending from the bill through the eye, contrasting with the rufous supercilium. Females have a duller, less defined mask.

4. 4

   Song

   Listen for its distinctive, slow, ethereal, and bell-like whistles, each note held for several seconds and on a different pitch. This is often the first indication of its presence in dense forests.

5. 5

   Foraging Behavior

   Observe its ground-foraging technique, characterized by a 'double-scratch' motion with both feet to uncover invertebrates in leaf litter.

Habitat & range

Biomes

Temperate coniferous forests, mixed forests, and occasionally deciduous forests.

Geographic range

Breeds from southeastern Alaska, Yukon, and British Columbia south through the Pacific Northwest to northern California, and eastward to western Montana. Winters primarily along the Pacific Coast from southeastern Alaska to southern California, and irregularly inland to the southwestern United States.

Elevation range

From sea level to subalpine forests, typically breeding at higher elevations in the southern parts of its range and lower elevations further north. Winters at lower elevations.

Preferred environments

Prefers dense, moist forests with a thick understory, often near streams or damp areas. During winter, they can be found in suburban parks and gardens with suitable tree cover.

Behavior

Activity time

Diurnal, most active during early morning and late afternoon.

Feeding habits

Forages primarily on the ground, scratching through leaf litter with both feet simultaneously in a characteristic 'double-scratch' motion. Diet consists mainly of insects (beetles, ants, caterpillars), spiders, and other invertebrates during the breeding season. In fall and winter, they switch to a diet rich in berries and fruits (e.g., salal, elderberry, cascara, madrone).

Social behavior

Generally solitary or found in pairs during the breeding season. In winter, they can form loose flocks, sometimes associating with American Robins, especially at abundant food sources.

Flight pattern

Flight is typically strong and direct, often low through the forest understory. When flushed, they may fly short distances to a nearby perch.

Migration pattern

Northern populations are migratory, moving south to coastal areas and lower elevations for winter. Southern populations may be resident or undertake short-distance altitudinal migrations. Migration occurs primarily at night.

Territoriality

Males establish and defend breeding territories through song and displays. In winter, they may defend feeding territories, particularly around abundant fruit sources.

Breeding & reproduction

Breeding season

Late April to August, with peak activity in May and June.

Nesting habits

Nests are typically built in coniferous or deciduous trees or shrubs, often close to the trunk or on a horizontal branch, usually 1-5 meters (3-16 ft) above the ground. The nest is a bulky cup made of twigs, moss, bark strips, and mud, lined with fine grasses and rootlets.

Clutch size

2-5 eggs, most commonly 3-4.

Egg description

2-5 eggs, typically 3-4. Eggs are pale blue to greenish-blue, often with fine reddish-brown spots or speckles, particularly at the larger end.

Incubation period

12-14 days, primarily by the female.

Fledging period

12-15 days after hatching. Young leave the nest before they can fly well.

Parental care

Both parents feed the nestlings and fledglings. The female primarily incubates, while the male often brings food to the incubating female and helps with feeding young.

Where to find

Field tips

1. Listen for the Song. The Varied Thrush's song is highly distinctive and often heard before the bird is seen. Learn to recognize its haunting, single-note whistles.
2. Look on the Forest Floor. They spend a lot of time foraging on the ground. Watch for movement in leaf litter, especially the characteristic double-scratching.
3. Be Patient in Dense Cover. These birds can be shy and prefer dense cover. Sit quietly in appropriate habitat and wait for them to emerge or move into view.
4. Check Berry Bushes in Winter. In fall and winter, focus on areas with abundant berry-producing shrubs and trees, as they are a primary food source.
5. Dawn and Dusk. They are most active and vocal during the early morning and late evening hours.

Similar species

Quick facts

Distinctive Feature:

Black breast band and slate-gray/rufous plumage

Song:

Ethereal, flute-like, single-note whistles

Foraging Style:

Ground-forager, uses 'double-scratch' technique

Habitat Preference:

Dense, moist coniferous and mixed forests

Winter Diet:

Primarily berries and fruits

Fun facts

• The Varied Thrush's song is often described as one of the most beautiful and haunting sounds of the Pacific Northwest forests.
• Despite its striking plumage, it can be surprisingly difficult to spot due to its preference for dense undergrowth and its tendency to remain still.
• It is the only species in the genus Ixoreus, making it a unique evolutionary lineage among thrushes.
• During harsh winters, Varied Thrushes may move into urban and suburban areas, becoming more visible to backyard birdwatchers.
• Its scientific name 'naevius' means 'spotted' or 'marked', referring to its distinctive plumage pattern.

Scientific classification

Kingdom

Animalia

Phylum

Chordata

Class

Aves

Order

Passeriformes

Family

Turdidae

Genus

Ixoreus

Species

Ixoreus naevius

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