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Welcome to the California Energy Commission
Public Interest Energy Research Program: Final Project Report

cover of report GUIDE TO RAPTOR REMAINS: A Photographic Guide for Identifying the Remains of Selected Species of California Raptors

Publication Number: CEC-500-2005-001
Publication Date: January 2005
PIER Program Area: Energy-Related Environmental Research

The executive summary, abstract and table of contents for this report are available below. This publication is available as an Adobe Acrobat Portable Document Format Files. In order to download, read and print PDF files, you will need a copy of the free Acrobat Reader software installed in and configured for your computer. The software can be downloaded from Adobe Systems Incorporated's website.

Download Report in Acrobat PDF ( 115 pages, 46 megabytes - note size! )


Executive Summary

None available.



Abstract

In order to address avian fatalities, many utility companies are now checking their equipment for potential areas that may pose hazards for birds. Identifying species of fatalities is important to estimate the risk to eagles, to determine the most effective type of retrofit, and to understand which species are found in that particular habitat. When decomposed carcasses, bone pieces, feathers, or pellets are found under electrical structures, it can be difficult to identify the species. This guide provides a resource for the identification of partial remains of selected avian species.



Table of Contents

INTRODUCTION
Birds and Electrical Structures
Laws Protecting Birds
Enforcement Actions
Monitoring

HOW TO USE THIS GUIDE
Precautions

CAUSE OF DEATH
Electrocution
Collision
Shooting
Other Causes

SKELETON
Bones: Bird or Mammal?

Distinctive Avian Bones

Measurements
Skull
Mandible
Sternum
Coracoid
Humerus
Ulna
Radius
Carpometacarpus
Femur
Tibiotarsus
Tarsometatarsus
Talons

SPECIES BY GROUP
Overview

Vultures
Turkey Vulture
California Condor

Osprey
Osprey

Kites
Mississippi Kite
White-tailed Kite

Harriers
Northern Harrier

Accipiters
Sharp-shinned Hawk
Cooper’s Hawk
Northern Goshawk

Buteos
Harris's Hawk
Red-shouldered Hawk
Swainson’s Hawk
Red-tailed Hawk
Ferruginous Hawk
Rough-legged Hawk

Eagles
Bald Eagle
Golden Eagle
Eagle Feathers

Falcons
American Kestrel
Peregrine Falcon
Prairie Falcon

Owls
Barn Owl
Long-eared Owl
Short-eared Owl
Western Screech Owl
Great Horned Owl
Burrowing Owl

Corvids
American Crow
Common Raven

APPENDICES
Articulated Specimens
Turkey Vulture
Red-tailed Hawk
Rough-legged Hawk
Golden Eagle
Great Horned Owl
Comparison

Pellets (Castings)

GLOSSARY
Visual Glossary
Glossary of Terms

SPECIES ABBREVIATIONS

REFERENCES


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