Why birdsong sounds beautiful to us…the evolutionary reasons

Everyone loves to listen to birdsong, but have you ever wondered why that should be so? And why some birds’ songs are more mesmerising than others’?

To other birds, birdsong absolutely doesn’t sound beautiful — it’s full of either self-advertisement — “Look at me, I would be a fantastic mate for you!” or venom and vitriol and swearing — “Keep away, this is my…