Bye-bye, birdie: Study finds North American birds getting smaller squib
December 05, 2019 5:18 AM
WASHINGTON (REUTERS) - Since 1978, researchers have scooped up and measured tens of thousands of birds that died after crashing into buildings in Chicago during spring and fall migrations. Their work has documented what might be called the incredible shrinking bird.
WASHINGTON (REUTERS) - Since 1978, researchers have scooped up and measured tens of thousands of birds that died after crashing into buildings in Chicago during spring and fall migrations. Their work has documented what might be called the incredible shrinking bird.
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