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Physics Technique Reveals Hidden Bugs to Bats  

Physics Technique Reveals Hidden Bugs to Bats  

Bats are for using -frequency acoustic signals to deftly snatch flying insects from the air at night, even amid dense forests. But more than 40 percent of insectivorous bat species hunt by plucking prey resting on leaves or other . Because the sound bats emit reflect off vegetation at all angles, the jumble of echoes should render a leaf-bound insect virtually imperceptible—so scientists have long suspected that bats use clues from vision, smells or prey-generated sounds to find a motionless meal.