Report

Trapping, banding, and color-banding of tricolored blackbirds in the Central Valley in 2008.

This report provides a summary of 2008 efforts to trap and band tricolors at three colonies in the Central Valley, and includes a summary of records of previously banded birds recovered, recaptured, and re-sighted during the field season.

Trapping, banding, and color-banding of tricolored blackbirds in the Central Valley in 2007.

This report provides a summary of the 2007 efforts to trap and band tricolors at three colonies in the Sacramento Valley.

Results of the Tricolored Blackbird 2008 Census

This report, authored by Rodd Kelsey, Audubon California ecologist and coordinator of the 2008 Statewide Census, summarizes the results of the 2008 census and provides perspectives on population trends as documented in previous statewide censuses dating back to the first census conducted in 1994.

Habitat and Population Characteristics of Tricolored Blackbird Colonies in California: 2005 Final Report

This is the final report for the 2005 field season of William J. Hamilton III and Robert J. Meese of the University of California, Davis. This report contains the results of the authors' detection and monitoring efforts, reproductive success estimates, a study of the foraging habits of birds at several colonies, GIS analyses of the landcover types within the foraging radius of breeding birds, and management recommendations.

2008 California Bird Species of Special Concern Tricolored Blackbird Species Account

This is the species account for the tricolored blackbird that appears in the publication "California Bird Species of Special Concern: A ranked assessment of species, subspecies, and distinct populations of birds of immediate conservation concern in California."

This publication should be cited as:

Shuford, W. D. and Gardali, T., editors. 2008. California Bird Species of Special Concern: A ranked assessment of species, subspecies, and distinct populations of birds of immediate conservation concern in California. Studies of Western Birds 1. Western Field Ornithologists, Camarillo, California, and California Department of Fish and Game, Sacramento. This volume is available from Allen Press at the location below.

Nesting Tricolored Blackbird Survey: Baja California 2007

This report summarizes a field survey of 44 known and potential tricolored blackbird colony locations conducted by Richard A. Erickson, LSA Associates, Horacio de la Cueva, Biologia de la Conservacion, and Mark J. Billings, LSA Associates, in northern Baja California, Mexico from January through August, 2007. Breeding was confirmed at only one of the sites surveyed.

Extreme drought conditions were observed in this region during the survey interval and are believed responsible for depressing prey abundance and resulting in poor reproductive performance in most terrestrial bird species, including the tricolor.

Paulek and Nash 2007 Southern California Survey

This report, by Tom Paulek, former Area Manager of the San Jacinto Wildlife Area in Riverside County, and his wife Susan Nash, an attorney, summarizes their survey of southern California tricolored blackbird breeding colony locations in Orange, Los Angeles, Riverside, and San Diego counties during the 2007 breeding season.

Prior to their survey, they contacted several prominent southern California biologists, including Kimball Garrett of the L.A. County Museum, Pete Bloom, formerly of the National Audubon Society, and Phillip Unitt of the San Diego Natural History Museum, to assess existing knowledge and to learn the locations of previous colonies.

Tricolored Blackbird Survey Report 2001

Summary report of the 2001 statewide Survey, coordinated by Point Reyes Bird Observatory (PRBO). Prepared by Diana Humple and Roy Churchwell.

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