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Swainson's Thrush

From Opus

Nominate subspeciesPhoto © by jvhigbeeSpanaway, Washington, USA, September 2005
Nominate subspecies
Photo © by jvhigbee
Spanaway, Washington, USA, September 2005
Catharus ustulatus

Contents

[edit] Identification

16–20 cm (6¼-7¾ in)

  • Brown upperparts (olive-brown on Eastern birds, reddish-brown on Western birds)
  • White underparts
  • Brown flanks
  • Lighter brown breast with darker spots
  • Pink legs
  • Light brown eye ring
Subspecies swainsoniPhoto © by Stanley JonesWildsumaco Lodge, Napo Province, Ecuador, January 2016
Subspecies swainsoni
Photo © by Stanley Jones
Wildsumaco Lodge, Napo Province, Ecuador, January 2016

[edit] Distribution

Breeds virtually throughout North America from Alaska to California. Wintering in the West Indies, and Central and South America from Mexico to Argentina.

[edit] Taxonomy

[edit] Subspecies

Six subspecies are recognised[1]:
Russet-backed

  • C. u. ustulatus:
  • C. u. phillipsi:
  • C. u. oedicus:
  • Breeds in California (coast ranges east to the west slope of the Sierra Nevada); winters from north-western Mexico south to Nicaragua

Olive-backed

  • C. u. incanus:
  • Breeds in central and eastern Alaska and north-western Canada (south to northern British Columbia and north central Alberta); winters in South America (Colombia to Peru)
  • C. u. appalachiensis:
  • C. u. swainsoni:
  • Breeds from western Canada (British Columbia and Alberta) south to Great Basin region and north central and north-eastern northern United States (north of the range of appalachiensis) and east to eastern Canada; winters from Panama south to Bolivia and north-western Argentina

[edit] Habitat

Coniferous and mixed woodland. Douglas fir on coasts.

[edit] Behaviour

[edit] Diet

Their diet consists mostly of invertebrates and fruit.

[edit] Breeding

They build a cup nest on a horizontal tree branch.

[edit] References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2018. The eBird/Clements checklist of birds of the world: v2018. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. Handbook of the Birds of the World Alive (retrieved April 2016)
  3. Wikipedia
  4. BF Member observations

[edit] External Links

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