Some studies indicate that a female selects her mate based in part on his ability to croon new songs. Hear the sound of the song sparrow's song.

This shows a song sparrow: Zanette et al. report that just hearing the calls and sounds of predators frightened mother song sparrows so much that they produced 40 % fewer offspring. This image ...

As many said at the time, bird song did sound different during lockdown ... The white-crowned sparrow, which has distinctive white and black head stripes, is found across much of the US and ...