The Status Of Golden Eagles In The West: Migration, Breeding, And Energy Infrastructure

Scientific Disciplines
Biological Sciences - Terrestrial
Keywords
breeding
eagles
aquila
raptors
golden eagle
Raptor View Research Institute
Western North America
Years
Authors
Volumes
Volume 17, No. 1-4

The status of golden eagles in the west: migration, 
Breeding, and energy infrastructure
Robert Domenech, Raptor View Research Institute, P.O. Box 4323, Missoula, Montana 59806, rob.
domenech@raptorview.org
Golden Eagles (Aquila chrysaetos), are widespread raptors, breeding predominately in 
western North America, from northern Alaska to central Mexico, occupying a wide range 
of habitats from arctic tundra to deserts. Several studies have recently indicated decreasing 
population estimates for migrant and wintering Golden Eagles in the western US. Long-
term point count surveys of migrating raptors along the Rocky Mountain Front flyway have 
indicated approximately a 50-percent decline in total autumnal and vernal Golden Eagle 
migrants observed over the past 15 yrs and suggest the rate of decline has been increasing. 
Regionally, specific populations in the Lower 48 and parts of Alaska have been well studied 
on their breeding grounds. Some of these populations appear to be stable, while others show 
declines. Observed declines, appear to be associated with habitat alterations. Oil and gas 
resource extraction has increased noticeably across many areas of the West. The demand for 
resource extraction is growing and now includes renewable energy facilities such as wind 
farms. Due to the greater than ever human presence on the landscape and projected increases 
in development, it is critical to assess eagle response to these changes within their current and 
historic breeding, migration and winter ranges. Mapping current Golden Eagle habitat use, 
locally and at the landscape level to better understanding the relationships between human 
activities and eagle ecology, are the vital first steps to creating a balance between maintaining 
viable Golden Eagle populations and sustainable development.