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

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  1. L

    Chiffchaff

    This answer is probably correct but I wonder how it can be known that an earlier subspecies is now extinct. Also how can it be known whether a small community of these tiny birds are migrated from other parts and are not endemic. The minute differences distinguishing a bird as a subspecies...
  2. L

    Chiffchaff

    Hello fellow birders, twitchers or ornithologists. My name is Dave and I have been interested in birds from childhood. I am posting today as I have never seen a bird species before that has been recorded as extinct- until today. Phylloscopus collybita is a small brown flycatcher that has a...
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