Bird call tweets go vi­ral

Daily Star - - NEWS -

A BIRD­SONG that “went vi­ral” has been tracked by sci­en­tists for the first time.

Ex­perts no­ticed that tra­di­tional tweets of whitethroa­ted spar­rows in parts of Canada had been grad­u­ally re­placed by songs with dif­fer­ent end­ings.

The 20-year study found how one rare song spread nearly 2,000 miles, pos­si­bly due to randy males pick­ing up re­gional di­alects from breed­ing grounds far away.

The anal­y­sis found a tra­di­tional fin­ish with three notes was wiped out in favour of a two-note fi­nale.

Pro­fes­sor Ken Ot­ter, of the Uni­ver­sity of North­ern Bri­tish Columbia, said: “One rare spar­row song ‘went vi­ral.’ As far as we know, it’s un­prece­dented.”

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