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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Henke, R J - Crawford, Walter C.
    Type: Article
    In: The journal of raptor research
    Volume: 21
    Issue: 2
    Date: 1987
    Page Range: 74--74
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-