Dusky Thrush

Overview

The Dusky Thrush is a strikingly patterned migratory thrush that breeds across Siberia and winters in East Asia, occasionally straying to western North America. Its heavily scaled underparts and bright rufous wing patch make it one of the more boldly marked thrushes in its range.

• Breeds across Siberian taiga and scrub
• Bright rufous wing panel is conspicuous even at rest
• Rare but regular vagrant to Alaska and the Pacific coast

Feather Identification

Dusky Thrush feathers are heavily patterned compared to many other thrushes.

• Wing feathers: Bright rufous-chestnut, forming a bold panel visible on both perched and flying birds
• Underpart feathers: Heavily marked with blackish crescents and scaling over a white or buffy base, especially dense across the breast and flanks
• Head feathers: Dark with a pale supercilium and dark cheek patch
• Back feathers: Blackish-brown, contrasting with the rufous wing panel
• The bold rufous wing patch combined with heavy blackish scaling on the underparts distinguishes Dusky Thrush feathers from most other thrush species

Plumage, Sex & Age Differences

Adult males show the boldest scaling and the richest rufous wing panel; females and immatures are similarly patterned but with somewhat less contrast and a duller wing patch. A complete molt occurs after breeding, refreshing the bold scaled pattern each year.

Habitat & Range

Dusky Thrushes breed across Siberian taiga forest and scrub, migrating to winter across East Asia, including Japan, Korea, and eastern China. The species is a rare but regular vagrant to western Alaska and occasionally further south along the Pacific coast of North America.

Behavior, Voice & Field Notes

Dusky Thrushes forage on the ground in open woodland, fields, and parks, often in flocks during migration and winter, taking insects, other invertebrates, and fruit. Their call is a harsh, chattering note, and their song is a simple thrush-like warble on the breeding grounds. Nests are built in trees or shrubs within taiga habitat.