Joseph Brandt, Wildlife Biologist, U.S. Fish and Wildlife Service. Email to Robert Stafford re Chimineas Feeding Sites. October 30, 2008. (Wildlife Biologist answers questions about concerns over new feeding site.)
Ron Jurek, Biologist (retired), California Fish and Wildlife Department and Member of California Condor Recovery Team. Email to Dale Steele and Jesse Grantham re Condor discussion material. August 25, 2005. (Biologist lists alternative lead sources.)
Ron Jurek, Biologist (retired), California Fish and Wildlife Department and Member of California Condor Recovery Team. Email to Karen Velas and Jeff Walters re Blue Ribbon Condor Report. August 30, 2008. (Biologist expresses his concerns about the alleged attribution of condor lead poisoning to lead-based ammunition.)
Dr. William Marcus, Senior Science Advisor, U.S. Environmental Protection Agency. Letter from Dr. Marcus to Chief Lazinski concerning use of lead ammunition at outdoor firing ranges. October 2000. (Scientist at the U.S. EPA states that spent lead ammunition at a shooting range does not pose an environmental threat.)
Chris N. Parish, Condor Project Director, The Peregrine Fund. Email to Kathy Sullivan re Barnes new varmint bullet. January 30, 2007. (Condor Project Director expresses concerns about toxicity of copper-tin alloy used in non-toxic bullet.)
Jim Petterson, Wildlife Biologist, Pinnacles National Monument. Email to Jesse Grantham, Chris Parish and other Condor Recovery Team members re copper bullets and heavy metal analyses. March 21, 2007. (Wildlife Biologist at Pinnacles National Monument expresses need for copper dosing study in condors to evaluate the impact of widespread use of copper bullets on condors.)
Robert Risebrough, Executive Director, Bodega Bay Institute. Email to Members of the Blue Ribbon Panel re Summary Report. October 5, 2008. (Open Letter to Blue Ribbon Panel Members expressing concern that the rationale used in report "lacks the rigor expected from a committee of scientists."
Robert Risebrough, Executive Director, Bodega Bay Institute. Email to Bruce Rideout re Follow-up on 238 'fragment'. October 5, 2010. (There is no 'smoking gun' link between condor lead-associated mortalities and lead ammunition used by hunters in California.)