Unique bird song that ‘went viral’ among sparrows travelled 2,000 miles in 20 years
The longest retweet: Scientists reveal how a bird song that ‘went viral’ among a species of sparrow in Canada spread 2,000 miles over the Rocky Mountains over 20 years Song has travelled from British Columbia to Alberta and Ontario in Canada It is thought the ‘catchy’ tweet has been passed on as females prefer the … Read more