9. Brett, J. J., and K. Bildstein. 1993. Pp. 367-370 in An international scheme for monitoring raptor populations at migration sites, E. T. Wilson, editor. Proceedings of the Eighth Pan African Ornithological Congress, Musee Royal de Afrique Centrale, Tervuren, Belgium. | Hawk Mountain Sanctuary: Learn Visit Join

9. Brett, J. J., and K. Bildstein. 1993. Pp. 367-370 in An international scheme for monitoring raptor populations at migration sites, E. T. Wilson, editor. Proceedings of the Eighth Pan African Ornithological Congress, Musee Royal de Afrique Centrale, Tervuren, Belgium.

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