PhysOrg Posted November 9, 2017 Share Posted November 9, 2017 Many animals will sound an alarm to alert other members of their group of impending danger. Now, researchers reporting in Current Biology on November 9 have shown that crested pigeons do this in a surprisingly non-vocal way. One of their main flight feathers produces a critical high-pitched sound as the birds fly away. As they flap faster to escape a predator, that alarm signal automatically increases in tempo. Read the full article on PhysOrg Link to comment Share on other sites More sharing options...
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