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Keyword: Accipiter gentilis

Factors affecting lifetime reproduction, longterm territory-specific reproduction, and estimation of habitat quality in northern goshawks

Publications Posted on: May 29, 2019
One measure of habitat quality is a species’ demographic performance in a habitat and the gold standard metric of performance is reproduction. Such a measure, however, may be misleading if individual quality is a fitness determinant.

From single species management to ecosystem management, "The goshawk"

Publications Posted on: May 11, 2018
Natural resource management in the United States is in a state of flux now more than any time in history. Many of the concerns about forest management are related to the enforcement of the Endangered Species Act. This act focuses forest management on preserving the habitat of a single species.

Long-term demography of the Northern Goshawk in a variable environment

Publications Posted on: May 17, 2017
The Nearctic northern goshawk (Accipiter gentilis atricapillis) is a resident of conifer, broadleaf, and mixed forests from the boreal to the southwestern montane regions of North America.

Northern goshawks on the Kaibab Plateau: A 20-year investigation into factors affecting their demography

Science Spotlights Posted on: August 26, 2016
The elusive northern goshawk, its forest habitats, and the habitats of its bird and mammal prey are significant conservation issues related to the management of forests throughout the hawk’s North American range.  The Rocky Mountain Research Station has been enumerating the population size and documenting the population ecology and demography of individual goshawks on Arizona’s Kaibab Plateau for 20 years with the objective of identifying the vegetation composition and structure of forests habitats that best supports their survival and reproduction.

Winter movements of adult northern goshawks that nested in southcentral Wyoming

Publications Posted on: June 15, 2016
Winter movements of four adult northern goshawks (Accipiter gentilis) that nest in southcentral Wyoming were monitored during the winter of 1992-93. Goshawks initiated fall migrations in early fall (primarily mid-September) while weather conditions are moderate. Female 1 migrated 185 km south of her nest. She wintered in a mountainous area in Colorado at a higher elevation (277 4 m) than her nest site (2500 m elevation).

Carrion use by northern goshawks

Publications Posted on: June 15, 2016
Northern goshawks (Accipiter gentilis) feed on a wide variety of birds and mammals (R. T. Reynolds, et al. 1992, USDA For. Ser. Gen. Tech. Rep. RM-217. Fort Collins, CO U.S.A.), but few accounts describe goshawks feeding on carrion. J.H. Schnell (1958, Condor 60:377-403) stated that, "It seems highly unlikely that the goshawk would forage for carrion under normal circumstances." However, G.M. Sutton (1925, Wilson Bull.

Nest-site preference of northern goshawks in southcentral Wyoming

Publications Posted on: June 15, 2016
In 1992, we studied the nest-site preference of goshawks (Accipiter gentilis atricapillus) nesting in lodgepole pine (Pinus contorta) forests of the Medicine Bow National Forest, southcentral Wyoming. For 39 active pairs of goshawks, we described nesting habitat at 3 spatial scales: nest tree, nest-tree area (0.04 ha circle centered at nest tree), and nest stand (homogeneous forest stand surrounding nest).

Northern goshawk (Accipiter gentilis)

Publications Posted on: June 15, 2016
The Northern Goshawk (hereafter referred to as Goshawk) is a large forest raptor, occupying boreal and temperate forests throughout the Holarctic. In North America, it breeds from Alaska to Newfoundland and south (Fig. 1).

The northern goshawk in Utah: Habitat assessment and management recommendations

Publications Posted on: May 12, 2016
This assessment describes northern goshawk (Accipiter gentilis) habitat in the State of Utah. Because of fire exclusion, insect and disease epidemics, timber harvest, livestock grazing, or a combination of these factors the forests and woodlands of Utah have changed drastically since the early 1900's.

Management recommendations for the northern goshawk in the southwestern United States

Publications Posted on: May 12, 2016
Present forest conditions loss of a herbaceous and shrubby understory, reductions in the amount of older forests, and increased areas of dense tree regeneration reflect the extent of human influence on these forests. These changes may also be affecting goshawk populations.