151. Bildstein, K. L., D. R. Barber, and A. Zimmerman, eds. 2007. Neotropical raptors: proceedings of the Second Neotropical Raptors Network Congress. Hawk Mountain Sanctuary, Orwigsburg, PA. | Hawk Mountain Sanctuary: Learn Visit Join

151. Bildstein, K. L., D. R. Barber, and A. Zimmerman, eds. 2007. Neotropical raptors: proceedings of the Second Neotropical Raptors Network Congress. Hawk Mountain Sanctuary, Orwigsburg, PA.

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