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

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  1. Chris B.

    Lack of hummingbirds in PA this year?

    For the first time in my many years of watching numerous daily visits of ruby-throated hummingbirds to my yard, 2016 has definitely been different. The quantity of hummingbirds is way down so far this spring, and I don't recall anything like this in the past decade or so... Can anyone explain it?
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