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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Birchenough, Andy C. - Evans, Stewart M.
    Type: Article
    In: The Avicultural magazine
    Volume: 106
    Issue: 4
    Date: 2000
    Page Range: 145--148
    Publication Info: Ascot, Berkshire, etc Avicultural Society, etc