University of Alberta in Edmonton,
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, Canada,
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, and colleagues turned to citizen science to find patterns in bird deaths in residential neighborhoods in Alberta. They asked volunteers living in homes and apartment buildings to survey the perimeter of their homes,
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, looking for birds that may have collided with one of the windows.
The team accumulated the equivalent of 34,114 days of monitoring data from their citizen scientists, who had observed 930 collisions and 102 bird deaths. There were three factors that increased the likelihood that a collision would occur: location in a rural setting, the height of the yard’s vegetation and the presence of a birdfeeder. Such attributes make the landscape more attractive to birds,
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, the researchers note,
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, and the more birds that are around,
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, the more likely that a collision with a window will occur. The researchers report their findings?in the August issue of the Condor,
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.
Eliminating birdfeeders would seem like an easy solution to this problem, but it wouldn’t really do much to stop these collisions, the scientists say, since the birds are attracted to other aspects of a home’s yard. And we don’t necessarily want to keep birds out of our yards anyway — they are pleasant to have around,
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, and providing habitat for nature is generally a good thing. Plus, no one can yet say whether the numbers of birds killed

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