Assertion: pigeon's bird | /r/CapableOf | go in european pigeon races
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text: USGS geologist John Hagstrum, who had taken up the mystery of homing pigeon navigation some years ago, was tipped off that sounds waves might be responsible for pigeons' innate navigation abilities when he noticed that in European pigeon races the birds tended to go astray when the now-retired supersonic Concord jet airliner was in the vicinity.