Regional variation in diets of breeding Red-shouldered hawks

Wilson Journal of Ornithology
By:  and 

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Abstract

We collected data on breeding season diet composition of Red-shouldered Hawks (Buteo lineatus) in south Texas and compared these data, and those reported from studies elsewhere to examine large scale spatial variation in prey use in eastern North America. Red-shouldered Hawk diets aligned into two significantly different groups, which appear to correlate with latitude. The diets of Red-shouldered Hawks in group 1, which are of more northern latitudes, had significantly more mammalian prey and significantly less amphibian prey than those in group 2, which are at more southerly latitudes. Our meta-analysis demonstrated the dietary flexibility of Red-shouldered Hawks, which likely accounts for their broad distribution by exploiting regional variations in taxon-specific prey availability.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Regional variation in diets of breeding Red-shouldered hawks
Series title Wilson Journal of Ornithology
DOI 10.1676/09-071.1
Volume 122
Issue 1
Year Published 2010
Language English
Publisher The Wilson Ornithological Society
Contributing office(s) Coop Res Unit Atlanta
Description 7 p.
First page 68
Last page 74