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Regional Distribution Shifts Help Explain Local Changes in Wintering Raptor Abundance: Implications for Interpreting Population Trends
The latitudinal center of abundance for the winter distributions of six western North America raptor species using Christmas Bird Counts from 1975–2011 was examined and support for the effect of distribution on BCR indices varied by species with Rough-legged Hawks showing the most evidence.
Changing habitat use associated with distributional shifts of wintering raptors
There is widespread evidence that multiple drivers of global change, such as habitat degradation, invasive species, and climate change, are influencing wildlife. Understanding how these drivers
Combining migration and wintering counts to enhance understanding of population change in a generalist raptor species, the North American Red-tailed Hawk
ABSTRACT An increasing body of scientific evidence supports the idea that many avian species are changing their migratory behavior as a result of climate change, land-use change, or both. We assessed
annual Variation in a utumn Migration p henology and e nergetic Condition at a Stopover Site in the Western United States
Climate change is having a dramatic effect on many migratory species. Changes in climate may lead to changes in food availability or other proximate cues that affect migratory behavior. We used 13
First record of nestling relocation by adult Gyrfalcons (Falco rusticolus) following nest collapse
Evidence of a partial collapse of a Gyrfalcon (Falco rusticolus) nest during the nestling period and the subsequent adult response is presented and it is believed this is the first report of an adult GyrFalcon moving a nestling to a new location following nest disturbance.
Short-eared Owl ( Asio flammeus ) surveys in the North American Intermountain West: utilizing citizen scientists to conduct monitoring across a broad geographic scale
The results suggest that within the state of Idaho, Short-eared Owls are more often found in areas with marshland or riparian habitat or areas with greater amounts of sagebrush habitat at the 1750 ha transect scale, and the local adaptation to agriculture represents the next best habitat to their historical native habitat preferences.
A novel camera trap design for studying wildlife in mountain glacier ecosystems yields new insight for glacier biodiversity in the Pacific Northwest, USA
Context The global recession of glaciers and perennial snowfields is reshaping mountain ecosystems. Beyond physical changes to the landscape and altered downstream hydrology, the implications of
Variation in autumn Migration phenology and energetic Condition at a Stopover Site in the Western United States
* Miller, R. A., J. D. Carlisle, N. Paprocki, G. S. Kaltenecker, and J. A. Heath. 2015. Annual variation in autumn migration phenology and energetic condition at a stopover site in the western United
Golden Eagle Abundance in Alaska: Migration Counts and Movement Data Generate a Conservative Population Estimate
Abstract. Estimating species density and abundance is challenging but important for establishing conservation and management strategies. Significant progress has been made toward estimating Golden