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

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  1. A

    Gull Herts, UK

    Thank you Lou and Nutcracker, I just wanted to write that the grey mantle of the left has a different shade on another screen. But if you cant ID it, it is far above my experience!
  2. A

    Gull Herts, UK

    And looking at the left Gull, this also doesnt jump to me as an straightforward GBBG. Reason? I am not sure, maybe its time for me to learn. Mantle is dark-lead grey, sure within variation for GBBG, but better for a Lesser-black-backed Gull. And the bill doesnt seem monster to me with the...
  3. A

    Gull Herts, UK

    Its one of those thread I normally learn, but the right Gull doesnt have a Great-black-backed Gull-jizz to me: -wing projection is to long - what seems to be an extensive all dark tail is not good for GBBG (I get the impression, that this can be judged with confidence?) -I would expect an...
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