Turkey Vultures Use Anthropogenic Thermals to Extend Their Daily Activity Period

James T. Mandel; Keith L. Bildstein

doi:10.1676/05-154.1

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James T. Mandel,^*,** Keith L. Bildstein^***

^*James T. Mandel, Department of Ecology and Evolutionary Biology, Corson Hall, Cornell University, Ithaca, NY 14850, USA
^**Corresponding author; jtm39@cornell.edu
^***Keith L. Bildstein, Hawk Mountain Sanctuary, Acopian Center for Conservation Learning, 410 Summer Valley Rd., Orwigsburg, PA 17961, USA

Abstract

We describe predictable nocturnal soaring flight in Turkey Vultures (Cathartes aura) feeding at a landfill in eastern Pennsylvania. Birds feeding at the landfill returned to their roosts each evening by gaining altitude while soaring in thermals above flared methane vents at the site. Our results highlight behavioral plasticity in this species, which, in part, may explain why Turkey Vultures are so common throughout much of their extensive range.

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James T. Mandel and Keith L. Bildstein "Turkey Vultures Use Anthropogenic Thermals to Extend Their Daily Activity Period," The Wilson Journal of Ornithology 119(1), 102-105, (1 March 2007). https://doi.org/10.1676/05-154.1

Received: 5 December 2005; Accepted: 1 May 2006; Published: 1 March 2007

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