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

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  1. nartreb

    Question from Pennsylvania, USA

    "Pregnant" isn't quite the right word to use on birds, but I suppose they do get a bit heavier when they're about to lay eggs. But I've never been able to notice. Birds can fluff up their feathers, making them look bigger. They do that when they're cold, for example. If your bird is sick (it...
  2. nartreb

    Question from Pennsylvania, USA

    brown-headed cowbird, female.
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