139. Mandel, J., and K. L. Bildstein. 2007. Turkey Vultures use anthropogenic thermals to extend their daily activity period. Wilson Journal of Ornithology 119:102-105. | Hawk Mountain Sanctuary: Learn Visit Join

139. Mandel, J., and K. L. Bildstein. 2007. Turkey Vultures use anthropogenic thermals to extend their daily activity period. Wilson Journal of Ornithology 119:102-105.

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