157. Goodrich, L. J. and J. Smith. 2008. Raptor migration in North America. In The State of North America's birds of prey (K. L. Bildstein, J. Smith, and E. Ruelas, eds.). Series in Ornithology No. 3, Nuttall Ornithological Club and American Ornithologists' Union, Washington, D. C. | Hawk Mountain Sanctuary: Learn Visit Join

157. Goodrich, L. J. and J. Smith. 2008. Raptor migration in North America. In The State of North America's birds of prey (K. L. Bildstein, J. Smith, and E. Ruelas, eds.). Series in Ornithology No. 3, Nuttall Ornithological Club and American Ornithologists' Union, Washington, D. C.

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