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

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  1. Andy Adcock

    Reliability of identifications: Some research

    I thought the choice was ok, it tested people on their ability to continually recognise the same species from different anglea, in alternate plumage and in a different medium. You can't expect a survey such as this to test you on separating Icterine and Melodious Warblers or Crested Lark from...
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