Swainson's Thrush or Wood Thrush?
Here's how to tell the difference
Swainson's Thrush
Wood Thrush
Swainson's Thrush
Catharus ustulatus
Also known as: Olive-Backed Thrush, Russet-Backed Thrush
General appearance
Swainson's thrush is a medium-sized thrush with a length of about 16-20 cm and a wingspan of 30-33 cm. It is characterized by olive-brown upperparts, pale underparts with a buffy wash on the breast, and distinct dark spots on the throat and chest. The bird features a pale, prominent eye-ring, giving it a spectacled appearance. The legs are pink, and the bill is relatively short and straight.
Male vs female
Males and females of Swainson's thrush appear similar, making them difficult to distinguish visually. Both sexes share the same coloration and markings. The slight size differences are not noticeable without direct comparison.
Juvenile
Juvenile Swainson's thrushes resemble adults but tend to have more rufous tones in their plumage. They may exhibit more pronounced spotting across the breast and a slightly duller appearance overall. The eye-ring remains noticeable in juveniles, aiding in identification.
Size
6.3 - 7.5 in/0.8 - 1.6 oz
There's more to learn about Swainson's Thrush
View full detailsWood Thrush
Hylocichla mustelina
General appearance
The wood thrush boasts a brown upper body that shades into a more vivid reddish-brown on the head. A stark contrast is formed by round black spots that adorn its white chest. This species flaunts a bold eye-ring and shows stronger markings than other brown thrushes. The variable tail can be notched, rounded, or squared-off, and the wings are pointed in shape. Its overall size is resemblant of a robin.
Male vs female
The wood thrush does not exhibit significant physical differences between genders. Both males and females share the same coloration and physical traits, including the brown upper body, reddish-brown head, black-spotted white chest, bold eye-ring, pointed wing shape, and notched or squared-off tail.
Juvenile
Juvenile wood thrushes maintain a similar appearance to adults, albeit with milder tones. Their brown coloration is lighter, and their black spots less pronounced. Notably, they differ from the brown thrasher species, which is striped rather than spotted, has yellow eyes, sports a longer tail, and exhibits colour akin to a sparrow.
Size
7.5 - 8.5 in/1.4 - 1.8 oz
There's more to learn about Wood Thrush
View full detailsHow to tell the Swainson's Thrush from the Wood Thrush
Visual differences
Swainson's Thrush is smaller (6.3-7.5 inches), olive-brown with a buffy breast wash and distinct dark spots on the throat and chest. It has a pale eye-ring and straight beak. Wood Thrush is larger (7.5-8.5 inches), brown with a more vivid reddish-brown head, stark black spots on a white chest, and a bold eye-ring. Wood Thrush also has a variable tail (notched, rounded, or squared) and pointed wings. Both species lack gender visual distinctions, but juveniles can show slightly milder tones and markings.
Key differences and behavior
Swainson's Thrush and Wood Thrush exhibit distinct behavioral and ecological differences. Swainson's Thrush is more elusive, often singing quietly from dense coniferous forests, while Wood Thrush is known for its remarkably melodious song made possible by its unique syrinx, usually in deciduous woodlands. Swainson's Thrush prefers lower nesting sites, often in conifers, whereas Wood Thrush nests higher, in deciduous trees, and may incorporate human materials. In terms of diet, both species consume insects and berries, but Swainson's Thrush is less likely to visit bird feeders. The Wood Thrush actively defends its territory against interspecific rivals, like Robins and Veeries, and easily adapts to suburban areas with large trees, unlike the more habitat-sensitive Swainson's Thrush. Swainson's Thrush is lighter, weighing up to 1.6 ounces, compared to Wood Thrush at around 1.8 ounces, correlating with their more energetic and elusive presence.
Still not sure? Here are more lookalikes!
Swainson's Thrush vs American Robin
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Wood Thrush vs [Select a bird]
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