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

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  1. F

    What is the most common bird in Pennsylvania?

    Thanks for the reply. Indeed, this was my thought process. I am trying to collate data from the main studies in North America, but the results seem to vary so much so it's difficult to come up with a conclusive answer.
  2. F

    What is the most common bird in Pennsylvania?

    Just wondering what is the most common bird. I was looking online, most websites say that the Northern Cardinal is the most popular but then if you look at eBird sightings it shows the Common Grackle as having over 4 million sightings. Any help would be greatly appreciated.
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