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

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  1. jurek

    The ultimate range maps

    Interestingly, maps of Siberian vagrant songbirds like the Yellow-browed Warbler show them more common as vagrants in north-west Europe than on their breeding range in Siberia. I noticed the same in ebird. In contrast, these maps are very good for species quickly increasing or decreasing, which...
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