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
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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
INTRODUCTIONLaws Protecting Birds
Enforcement Actions
Monitoring
HOW TO USE THIS GUIDE
CAUSE OF DEATH
Collision
Shooting
Other Causes
SKELETON
Distinctive Avian Bones
Measurements
Mandible
Sternum
Coracoid
Humerus
Ulna
Radius
Carpometacarpus
Femur
Tibiotarsus
Tarsometatarsus
Talons
SPECIES BY GROUP
Vultures
California Condor
Osprey
Kites
White-tailed Kite
Harriers
Accipiters
Cooper’s Hawk
Northern Goshawk
Buteos
Red-shouldered Hawk
Swainson’s Hawk
Red-tailed Hawk
Ferruginous Hawk
Rough-legged Hawk
Eagles
Golden Eagle
Eagle Feathers
Falcons
Peregrine Falcon
Prairie Falcon
Owls
Long-eared Owl
Short-eared Owl
Western Screech Owl
Great Horned Owl
Burrowing Owl
Corvids
Common Raven
APPENDICES
Red-tailed Hawk
Rough-legged Hawk
Golden Eagle
Great Horned Owl
Comparison
Pellets (Castings)
GLOSSARY
Glossary of Terms
SPECIES ABBREVIATIONS
REFERENCES

