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By: Wayland, Mark - Wilson, Laurie K. - Elliott, J E - Miller, M J R - Bollinger, Trent, - Mcadie, M - Langelier, Ken M - Keating, Jonathan - Froese, J M WType: ArticleIn: The journal of raptor researchVolume: 37Series:Issue: 1Date: 2003Page Range: 8--18Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: