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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Whalen, David M. - Watts, Bryan D., - Johnston, David W
    Type: Article
    In: The journal of raptor research
    Volume: 34
    Issue: 1
    Date: 2000
    Page Range: 42--44
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-