Catchy Sparrow Song Goes 'Viral' Across Canada in Continent-Wide Phenomenon ScienceAlertA ‘Viral’ New Bird Song in Canada Is Causing Sparrows to Change Their Tune GizmodoWhite-throated sparrows change their tune from a three note to a two note Yahoo News CanadaGoing viral: Why Canadian sparrows have changed their tune MSN MoneyHow a White-throated Sparrow's New Tune Went Viral Audubon MagazineView Full Coverage on Google News