Identifying Factors Influencing Presence and Reproductive Success of a Golden Eagle Population in South Central Montana
Golden Eagles (Aquila chrysaetos) in the western U.S. have received increased attention due to an apparent decline in the number of annual migrants and expected increased risk from energy development. Long-term research focused on resident, breeding Golden Eagles in this region is rare and sorely ne...
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ftmontanastunojs:oai:ojs.arc.lib.montana.edu:article/932 2024-09-15T18:41:33+00:00 Identifying Factors Influencing Presence and Reproductive Success of a Golden Eagle Population in South Central Montana Crandall, Ross Bedrosian, Bryan Craighhead, Derek 2013-12-31 application/pdf https://arc.lib.montana.edu/ojs/index.php/IJS/article/view/932 eng eng Intermountain Journal of Science https://arc.lib.montana.edu/ojs/index.php/IJS/article/view/932/767 https://arc.lib.montana.edu/ojs/index.php/IJS/article/view/932 Copyright (c) 2013 Intermountain Journal of Sciences Intermountain Journal of Sciences; Vol. 19 No. 1-4 December (2013); 36 1081-3519 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Non-peer-reviewed Abstract 2013 ftmontanastunojs 2024-07-10T03:16:13Z Golden Eagles (Aquila chrysaetos) in the western U.S. have received increased attention due to an apparent decline in the number of annual migrants and expected increased risk from energy development. Long-term research focused on resident, breeding Golden Eagles in this region is rare and sorely needed to assess the degree of population decline. In addition, managers require the identification of factors that influence presence and breeding success of Golden Eagles to create an effective management strategy. Beginning in 2010, we revisited a historically surveyed study site near Livingston, Montana. Our objective was to compare the current status of the Golden Eagle breeding population to that from the 1960’s and to identify factors necessary for maintaining Golden Eagle populations. In the last 3 breeding seasons, we have documented a near 100-percent occupancy rate of historic territories and a marked increase in the number of breeding pairs. Our results also indicate that factors related to prey availability most strongly influenced nest site selection and reproductive success. Based on our current results, we suggest Golden Eagle populations may remain strong in some locations and management strategies should focus on maintaining prey habitat. Article in Journal/Newspaper Aquila chrysaetos golden eagle Montana State University Library Open Journal Systems |
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Montana State University Library Open Journal Systems |
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ftmontanastunojs |
language |
English |
description |
Golden Eagles (Aquila chrysaetos) in the western U.S. have received increased attention due to an apparent decline in the number of annual migrants and expected increased risk from energy development. Long-term research focused on resident, breeding Golden Eagles in this region is rare and sorely needed to assess the degree of population decline. In addition, managers require the identification of factors that influence presence and breeding success of Golden Eagles to create an effective management strategy. Beginning in 2010, we revisited a historically surveyed study site near Livingston, Montana. Our objective was to compare the current status of the Golden Eagle breeding population to that from the 1960’s and to identify factors necessary for maintaining Golden Eagle populations. In the last 3 breeding seasons, we have documented a near 100-percent occupancy rate of historic territories and a marked increase in the number of breeding pairs. Our results also indicate that factors related to prey availability most strongly influenced nest site selection and reproductive success. Based on our current results, we suggest Golden Eagle populations may remain strong in some locations and management strategies should focus on maintaining prey habitat. |
format |
Article in Journal/Newspaper |
author |
Crandall, Ross Bedrosian, Bryan Craighhead, Derek |
spellingShingle |
Crandall, Ross Bedrosian, Bryan Craighhead, Derek Identifying Factors Influencing Presence and Reproductive Success of a Golden Eagle Population in South Central Montana |
author_facet |
Crandall, Ross Bedrosian, Bryan Craighhead, Derek |
author_sort |
Crandall, Ross |
title |
Identifying Factors Influencing Presence and Reproductive Success of a Golden Eagle Population in South Central Montana |
title_short |
Identifying Factors Influencing Presence and Reproductive Success of a Golden Eagle Population in South Central Montana |
title_full |
Identifying Factors Influencing Presence and Reproductive Success of a Golden Eagle Population in South Central Montana |
title_fullStr |
Identifying Factors Influencing Presence and Reproductive Success of a Golden Eagle Population in South Central Montana |
title_full_unstemmed |
Identifying Factors Influencing Presence and Reproductive Success of a Golden Eagle Population in South Central Montana |
title_sort |
identifying factors influencing presence and reproductive success of a golden eagle population in south central montana |
publisher |
Intermountain Journal of Science |
publishDate |
2013 |
url |
https://arc.lib.montana.edu/ojs/index.php/IJS/article/view/932 |
genre |
Aquila chrysaetos golden eagle |
genre_facet |
Aquila chrysaetos golden eagle |
op_source |
Intermountain Journal of Sciences; Vol. 19 No. 1-4 December (2013); 36 1081-3519 |
op_relation |
https://arc.lib.montana.edu/ojs/index.php/IJS/article/view/932/767 https://arc.lib.montana.edu/ojs/index.php/IJS/article/view/932 |
op_rights |
Copyright (c) 2013 Intermountain Journal of Sciences |
_version_ |
1810485958845399040 |