MPG Raptor Banding and Fall Migration Summary Report 2014

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MPG Raptor Banding and Fall Migration Summary Report 2014

January 22, 2015

This report summarizes fall 2014 raptor counting and banding at the MPG Ranch. During 72 days of counting from 1 September to 12 November, RVRI counted 3,548 diurnal raptors of 17 species.

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MPG Raptor Banding and Fall Migration Summary Report 2014

Summary

Table of Contents

Table of Figures

Abstract

General Raptor Migration Summary

Species Composition

Percentage of raptors separated by group counted during the fall 2011-2014 surveys on the MPG Ranch

The number of raptors counted in one-hour intervals during 2014 fall migration at the MPG Ranch.

Seasonal Patterns of Raptor Migration

Species Accounts Northern Harrier, Osprey

Turkey Vulture Golden Eagle

Bald Eagle Sharp-shinned Hawk

Northern Goshawk Coopers Hawk

Red-tailed Hawk Rough Legged Hawk

Swainson’s Hawk Broad-winged Hawk

Ferruginous Hawk American Kestrel

Peregrine Falcon Merlin

Prairie Falcon

Comparison Between Raptor Count Sites

Comparison of raptor observations between the MPG Ranch, Bridger Mountains, Nora Ridge, Roger Pass, and Jewel Basin during the 2014 fall migration

Fall 2014 Trapping and Banding Results

Proportion of Raptors Captured at Each Trapping Site by Group