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Death metal singers have a vocal counterpart ... in bats
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<drupal-media data-entity-type="media" data-entity-uuid="1d0b2a25-9f06-4758-b02e-8dd42eef9d1f" data-caption='Bats have a seven-octave vocal range. Researchers say, to make their low-frequency calls, bats use the same trick as throat singers and death metal growlers.<cite class="npr-credit">AP </cite>' alt="Bats have a seven-octave vocal range. Researchers say, to make their low-frequency calls, bats use the same trick as throat singers and death metal growlers."></drupal-media>
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