Sparrows sing 'sexier' songs as road traffic decreases
                                
                                
                                    (Newser) -
                                    With fewer cars on the road because of the pandemic, birds no longer have to shout to be heard. The result? Softer, sweeter songs, say researchers in a new study at  Science . More to the point, "sexier" songs, lead researcher Elizabeth Derryberry of the University of Tennessee tells  AFP...