Monitoring insect lifestyles in the air and the mud
When Martin Wikelski and David Wilcove went bird-watching in Cape May, N.J., one fall day in 2004, they were surprised to find that the main spectacle had four wings instead of two. Migrating dragonflies filled the air, flashing iridescent green and blue as they hovered over dunes, perched, then zipped off.
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