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Streak-backed Oriole

From Opus

Photo by Stanley JonesLocation: Guanacaste Province, Costa Rica, November, 2011
Photo by Stanley Jones
Location: Guanacaste Province, Costa Rica, November, 2011
Icterus pustulatus


[edit] Identification

20cm. Bright orange body, with black streaks on back, deep orange-red head and breast, black face, chin, black wings with two white bars and white base to primaries, black tail with white corners. The culmen is straight.
The female and immature show more yellow/less orange than the male, and even show some yellow on the tail.

[edit] Variation

Males of some subspecies have wider black stripes on the back sometimes giving the impression of a solid black mantle.

Photo by blubirdLocation: San Blas, Mexico, March, 2011
Photo by blubird
Location: San Blas, Mexico, March, 2011

[edit] Similar Species

The Altamira Oriole, with which it shares range, has solid black mantle instead of black streaks. It also has orange instead of the upper white wing bar.

[edit] Distribution

Mainly along the Pacific slope from sea level to 1800m. of Mexico south to Costa Rica. A rare winter visitor to Southern California and southern Arizona. Accidental vagrant to Oregon, Texas, and Colorado. The first documented visitor to Texas was photographed mid-February, 2005 at Brazos Bend State Park.

Immature or femalePhoto by scottishdudeLocation: La Ensenada, Costa Rica, March, 2008
Immature or female
Photo by scottishdude
Location: La Ensenada, Costa Rica, March, 2008

[edit] Taxonomy

Polytypic. Consists of eight subspecies[1] :

[edit] Habitat

Tree canopy in open, wooded sites, forest edges and scrub or grassland areas with scattered trees.

[edit] Behaviour

The diet includes insects, fruit, and seeds. The nest is a short hanging basket of plant fibers where it lays 3-4 white or pale bluish eggs, splotched brown. Seen singly or in small groups, often with other orioles.

[edit] References

  1. Clements, JF. 2010. The Clements Checklist of Birds of the World. 6th ed., with updates to December 2010. Ithaca: Cornell Univ. Press. ISBN 978-0801445019. Spreadsheet available at
  2. Fagan and Komar, Peterson field guide to birds of northern Central America

[edit] External Links


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