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GAP Analysis Predicted Distribution Map

Swainson's Thrush (Catharus ustulatus)

Species Code: CAUS

Click to enlarge Range map

Legend:
= Core Habitat
= Marginal Habitat

Breeding Range Map
The green area shows the predicted habitats for breeding only. The habitats were identified using 1991 satellite imagery, Breeding Bird Atlas (BBA), other datasets and experts throughout the state, as part of the Washington Gap Analysis Project. Habitats used during non-breeding months and migratory rest-stops were not mapped.

Metadata (Data about data or how the map was made)

Click to enlarge distribution map

Other maps & Information:
  • Breeding Bird Atlas
  • NatureMapping observations
    during breeding season
  • NatureMapping observations
    throughout the year

This thrush is common in forested regions throughout the state, especially at low to moderate elevations of western Washington. In eastern Washington, this species is found in moist forests, and in west-side residential areas and wooded parks if these are sufficiently brushy or forested

Two subspecies breed in Washington: C.u.swainsoni ("olive-backed" form) of western Washington and the southeastern Cascades, and C.ustulatus (“russet-backed form) of the northeastern Cascades and east. The Swainson’s Thrush is the most abundant Catharus thrush in Washington during breeding season. Swainson’s Thrushes prefer dense brush in or by shaded hardwood or mixed forests.

Translated from the Washington Gap Analysis Bird Volume by Uchenna Bright
Text edited by Gussie Litwer
Webpage designed by Dave Lester