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Keyword: Northern Goshawk

The Northern Goshawk: Ecology and management: Proceedings of a symposium of the Cooper Ornithological Society

Publications Posted on: June 22, 2020
This collection of 22 papers summarizes the current state of knowledge on Northern Goshawks (Accipiter gentilis) within the scientific and management communities. The proceedings are presented in three sections. Research Approaches and Management Concepts contains overviews of research and management for goshawks, forest management to provide goshawk habitat, and field techniques.

A review and evaluation of factors limiting northern goshawk populations

Publications Posted on: March 04, 2020
Northern Goshawk (Accipiter gentilis) populations are suspected of declining due to forest management treatments that alter the range of environmental conditions beneficial to their reproduction and survival. To develop effective goshawk conservation strategies, information on intrinsic and extrinsic factors that influence goshawk fitness is required.

Demography of Northern goshawks in northern Arizona, 1991-1996

Publications Posted on: March 04, 2020
We studied 282 nesting attempts on 107 territories of Northern Goshawks (Accipiter gentilis) on the Kaibab Plateau in northern Arizona from 1991–1996. Mark-recapture methods were used to estimate recruitment, turnover of adults on territories, fi delity to territories by adults, and apparent annual survival of breeding adults. Territories were regularly spaced at a mean nearest-neighbor distance of 3.9 km.

Effects of radiotransmitters on northern goshawks: Do tailmounts lower survival of breeding males?

Publications Posted on: March 04, 2020
We used the Cormack-Jolly-Seber model to estimate the effects of radiotransmitters on survival of breeding northern goshawks (Accipiter gentilis). We separately compared apparent annual survival of leg-banded goshawks with (1) tailmount- and (2) backpack-style radiotransmitters (hereafter tailmounts and backpacks) to apparent annual survival of breeding adults with legbands only.

Influence of site quality and stand density on goshawk habitat in southwestern forests

Publications Posted on: March 04, 2020
Current management guidelines for the Northern Goshawk (Accipiter gentilis) in the Southwest call for a mosaic habitat consisting of approximately 10 percent of the forest area in grass-forb/ shrubs, 10 percent in 2.5-12.7 cm trees, 20 percent in 12.7-30.5 cm trees, 20 percent in 30.5-45.7 cm trees, 20 percent in 45.7-61.0 cm trees, and 20 percent in 61.0 cm and greater trees.

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.

The role of fire in sustaining northern goshawk habitat in Rocky Mountain forests

Publications Posted on: April 23, 2018
The northern goshawk (Accipiter gentilis), is a northern latitude, forest dwelling raptor. In the Western United States, goshawks live in most forests, including those dominated by western hemlock (Tsuga heterophylla (Raf.) Sarg.), lodgepole pine (Pinus contorta Dougl. ex. Loud.), ponderosa pine (Pinus ponderosa Dougl. ex Laws.), and western larch (Larix occidentalis Nutt).

Northern Goshawks: A 20 year study of ecology and habitat on the Kaibab Plateau

Pages Posted on: August 08, 2017
Research on the Kaibab has shown that goshawks, predators of birds and small mammals, are strongly food-limited. The local suite of prey depends on the amount, quality, and intermixture of the particular habitats needed by each prey. These include a fine-scale mix of small groups of mature trees with interlocking crowns for tree squirrels, woodpeckers, grouse, and other birds, and scattered, small grass-forb openings for rabbits, ground squirrels, grouse, and other prey. Interestingly, this habitat mix characterized the natural conditions of the ponderosa pine and mixed conifer forests on the Kaibab Plateau before initiation of fire suppression and organized tree harvests.

Plants and animals

Pages Posted on: February 06, 2017
National Forest System lands provide valuable habitat for a wide-range of species. These publications and tools provide information regarding individual species and their habitats. The information here should be supplemented by information specific to the individual planning unit.

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.