Reports to Download

Conservation Plan for the Tricolored Blackbird

rjmeese — Wed, 05 Mar 2008 15:42:21 -0800

The Tricolored Blackbird Working Group was formed to voluntarily define and implement actions and activities that would help to ensure the long-term survival of the tricolored blackbird. Working Group members produced a Conservation Plan to guide their efforts.

The Conservation Plan was signed in September, 2007.

The Conservation Plan should be cited as:

Tricolored Blackbird Working Group. 2007. Conservation Plan for the Tricolored Blackbird (Agelaius tricolor). Susan Kester (ed.). Sustainable Conservation. San Francisco, CA.

2008 California Bird Species of Special Concern Tricolored Blackbird Species Account

rjmeese — Thu, 20 Mar 2008 11:16:14 -0700

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.

Central Valley Bird Club 2004 Special Edition

rjmeese — Thu, 06 Mar 2008 14:18:33 -0800

This special edition of the Central Valley Bird Club Bulletin was devoted to the tricolored blackbird.

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

rjmeese — Tue, 16 Sep 2008 11:20:58 -0700

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.

Nesting Tricolored Blackbird Survey: Baja California 2007

rjmeese — Fri, 07 Mar 2008 11:42:37 -0800

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

rjmeese — Fri, 07 Mar 2008 11:33:00 -0800

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.

Settlement and Breeding Colony Characteristics of Tricolored Blackbirds in 2006 in the Central Valley of California

rjmeese — Tue, 04 Mar 2008 13:50:17 -0800

This report summarizes field work conducted by Dr. Robert J. Meese during the 2006 field season, including colony detection, monitoring, descriptions of colony fates, estimates of productivity, and recommendations for additional conservation actions. This report was submitted to the U.S. Fish & Wildlife Service and Audubon California, who supported the field work.

Settlement, Breeding, Productivity, and Color-banding of Tricolored Blackbirds in 2007 in the Central Valley of California

admin — Tue, 04 Mar 2008 13:52:08 -0800

This report summarizes field work conducted by Dr. Robert J. Meese during the 2007 field season, including colony detection, monitoring, descriptions of colony fates, estimates of productivity, color-banding, and conservation recommendations. This report highlights the near-complete reproductive failure of the species in California in 2007. This report was submitted to the U.S. Fish & Wildlife Service and Audubon California, who supported the field work.

Tricolored Blackbird 2000 Breeding Season Census and Survey - Observations and Recommendations

rjmeese — Wed, 27 Aug 2008 11:22:18 -0700

W.J. Hamilton III's annual report from the 2000 Survey.

Tricolored Blackbird Survey Report 2001

rjmeese — Thu, 06 Mar 2008 16:08:15 -0800

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