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Status, Nesting Density, and Macrohabitat Selection of Red-Shouldered Hawks in Northern New Jersey

Thomas Bosakowski, Dwight G. Smith and Robert Speiser
The Wilson Bulletin
Vol. 104, No. 3 (Sep., 1992), pp. 434-446
Stable URL: http://www.jstor.org/stable/4163184
Page Count: 13
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Status, Nesting Density, and Macrohabitat Selection of Red-Shouldered Hawks in Northern New Jersey
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Abstract

Response rates of Red-shouldered Hawks (Buteo lineatus) and Red-tailed Hawks (B. jamaicensis) to broadcast vocalizations in suitable/marginal Red-shouldered Hawk habitat indicated that the species was not completely isolated by habitat. Red-shouldered Hawk responses were not dependent on the time of day, but occurred more frequently near larger wetlands (< 10 ha). Sixteen active nests were found in a 7200-ha survey area representing the densest nesting population reported (0.22 nests/100 ha). Macrohabitats of 14 Red-shouldered Hawk nest sites were compared to 64 unused sites. Results revealed preferences for wetlands, stream bottomlands, small forest openings (owing to wetlands), and coniferous and mixed forest habitats but avoidance of suburban, open water, and deciduous forest habitats.

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