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

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  1. L

    Birds that whistle - need info

    Hi Everyone. I am doing some research, and am looking for any resources or information about birds that whistle (worldwide). Is there such a list? Since a "whistle" is defined as making a sound between the lips and teeth, what defines a bird that whistles? Thanks!
  2. L

    Greetings from New England!

    Hi everyone! I am interested in books about birds and birders, nature photography, and bird art. Looking forward to learning from this forum!
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