• Welcome to BirdForum, the internet's largest birding community with thousands of members from all over the world. The forums are dedicated to wild birds, birding, binoculars and equipment and all that goes with it.

    Please register for an account to take part in the discussions in the forum, post your pictures in the gallery and more.
Feel the intensity, not your equipment. Maximum image quality. Minimum weight. The new ZEISS SFL, up to 30% less weight than comparable competitors.

California Thrasher - BirdForum Opus

Photo © by corvidophil
Descanso Gardens, Los Angeles County, California, USA, 16 February 2005
Toxostoma redivivum

Identification

T. r. sonomae
Photo © by Joseph Morlan
Pacifica, California, USA, 26 January 2021

28–32 cm (11-12½ in)

  • Dark brown upperparts
  • Paler grey-brown underparts
  • Finely streaked face
  • Buff throat patch
  • Long tail
  • Reddish-brown undertail coverts
  • Dark iris
  • Very long black, decurved bill
  • Grey-brown legs and feet

Sexes similar

Similar Species

Crissal Thrasher of Colorado Desert lacks pale supercilium and has deep rust-colored crissum. Ranges do not overlap. LeConte's Thrasher is smaller and paler, also lacks supercillium; prefers sparsely vegetated arroyos and gullies.

Variations

Northern populations are darker and browner (less gray).

Distribution

Northern California south to northern Baja California.

Taxonomy

Subspecies[1]

This is a polytypic species consisting of two subspecies:

  • T. r. sonomae:
  • Chaparral belt of northern California (south to Monterey)
  • T. r. redivivum:

A third subspecies pasadenensis is generally considered invalid[4].

Habitat

Chaparral, Riparian, foothills mixed woods and dense shrubs. Creeks and lake shores. Also residential areas.

Behaviour

Actions

Runs on the ground with tail cocked. Inconspicuous except when singing.

Diet

The diet includes beetles, spiders, bugs and fruits.

Breeding

Both sexes build the nest which is hidden dense vegetation. The eggs are incubated for 14 days; the young fledge 14-17 days later.

Vocalisation

Song consists of vigorous phrases variously repeated, delivered in a continuous sequence with brief pauses between successive sequences. Females also sing and may pairs may counter-sing. Calls include a low harsh chuck and a loud throaty quip.

Movements

Resident with limited dispersal of young.

References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2019. The eBird/Clements Checklist of Birds of the World: v2019. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. Cody, M. L. (2020). California Thrasher (Toxostoma redivivum), version 1.0. In Birds of the World (A. F. Poole, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.calthr.01
  3. Cody, M. (2020). California Thrasher (Toxostoma redivivum). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/58209 on 3 April 2020).
  4. Lepage D. (2021) [Avibase - https://avibase.ca/20748450 ]. Retrieved 20 February 2021
  5. Whatbird.com
  6. Audubon Field Guide

Recommended Citation

External Links

Search the Gallery using the scientific name:

Search the Gallery using the scientific name:

GSearch checked for 2020 platform.

Top