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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

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    The SongFinder

    Has anyone tried The SongFinder - a hearing aid for those of us with high-frequency hearing loss, who cannot hear much in the way of bird song. It works by lowering the frequency range of the bird's call/song to a frequency within our range. If so, how severe is your normal hearing and how...
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