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Red-shouldered Hawk - BirdForum Opus

Revision as of 00:31, 13 November 2014 by Nutcracker (talk | contribs) (more details, better pics)
B. l. texanus, adult. Photo by Stanley Jones
Camelot Park, Bryan, Brazos County, Texas, USA, September 2014
Buteo lineatus

Identification

B. l. extimus, adult
Photo by tetoneon
Naples, Florida, USA, January 2014
B. l. elegans, adult
Photo by digishooter
Wofford Heights, Kern Co., California, USA, January 2008

Males 43 to 58 cm. Females 48 to 61 cm.

  • Brown head
  • Red chest
  • Pale belly with reddish bars
  • Narrow tail marked with narrow white bars
  • Red "shoulder" is visible when the bird is perched
  • Upper parts dark with pale spots
  • Long yellow legs
  • In flight, distinctive translucent crescent near tips of primaries
  • Very vocal compared to most other raptors
  • Juveniles lack the reddish shoulders and have vertical streaking on the breast. The tail has buff, not white bars. There is some variation in the different subspecies.

Distribution

Eastern North America and along the coast of California and northern Mexico.

Taxonomy

Five subspecies are accepted:

  • B. l. lineatus - Southeast Canada, northeast & central east USA
  • B. l. alleni -- Southeast USA (except southern Florida)
  • B. l. extimus -- Southern Florida
  • B. l. elegans -- Western California, southwest Oregon, and northern Baja California
  • B. l. texanus -- Southern Texas and far northeast Mexico

The subspecies differ in color intensity, with B. l. extimus the palest, and B. l. elegans the most richly orange; also slight differences in size though this is not useful in the field. There is less plumage variation between the juveniles of the different subspecies.

The California subspecies B. l. elegans is well separated from the rest of the species' range, and has been suggested as a potential species split, though none of the major authorities have accepted this.

Habitat

Juvenile
Photo by HelenB
SE Texas, USA, Dec 2008

Deciduous and mixed wooded areas, often near water. Quite common in suburban subdivisions with trees, water features and golf courses.

Behaviour

Breeding

A stick nest is built in a major fork of a large tree and 3 to 4 blotchy marked eggs are laid. They are incubated for 28 to 33 days. The young leave the nest at about six weeks of age, but remain dependent on the parents until they are 17 to 19 weeks old.

Diet

Includes voles, mice and chipmunks, amphibians, reptiles (especially small snakes), small birds and large insects. They usually hunt from a perch.

Call

Loud, strident repeated cries: keeah, keeah, keeah.

References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2014. The eBird/Clements checklist of birds of the world: Version 6.9., with updates to August 2014. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. BF Member observations

Recommended Citation

External Links


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