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Nesting ecology and behavior of Broad-winged Hawks in moist karst forests of Puerto Rico

Journal of Raptor Research
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Abstract

The Puerto Rican Broad-winged Hawk (Buteo platypterus brunnescens) is an endemic and endangered subspecies inhabiting upland montane forests of Puerto Rico. The reproductive ecology, behavior, and nesting habitat of the Broad-winged Hawk were studied in Ri??o Abajo Forest, Puerto Rico, from 2001-02. We observed 158 courtship displays by Broad-winged Hawks. Also, we recorded 25 territorial interactions between resident Broad-winged Hawks and intruding Red-tailed Hawks (Buteo jamaicensis jamaicensis). Broad-winged Hawks displaced intruding Red-tailed Hawks from occupied territories (P = 0.009). Mayfield nest survival was 0.67 across breeding seasons (0.81 in 2001, N = 6; 0.51 in 2002, N = 4), and pairs averaged 1.1 young per nest (years combined). The birds nested in mixed species timber plantations and mature secondary forest. Nests were placed in the upper reaches of large trees emerging from the canopy. Nest tree DBH, understory stem density, and distance to karst cliff wall correctly classified (77.8%) nest sites. ?? 2005 The Raptor Research Foundation, Inc.

Suggested Citation

Hengstenberg, D., Vilella, F., 2005, Nesting ecology and behavior of Broad-winged Hawks in moist karst forests of Puerto Rico: Journal of Raptor Research, v. 39, no. 4, p. 404-416.

Publication type Article
Publication Subtype Journal Article
Title Nesting ecology and behavior of Broad-winged Hawks in moist karst forests of Puerto Rico
Series title Journal of Raptor Research
Volume 39
Issue 4
Year Published 2005
Language English
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Journal of Raptor Research
First page 404
Last page 416
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