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Biologists set out to compare four main lists of bird species worldwide to find out how the lists differ—and why. They found that although the lists agree on most birds, disagreements in Southeast Asia and the Southern Ocean could mean that some species are missed by conservation ecologists.
Ornithologists at the University of Utah say that community science bird data shows different trends in bird populations than professional bird surveys do, especially in developing countries. More observations are needed, the researchers say, both by birders and professionals.
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