chances are you've witnessed a cacophony of birds singing in the treetops. But why do birds chirp at sunset? Birds chirp at sunset because they are communicating with the other birds around them.

Have you noticed more birds chirping lately? That must mean warmer spring weather is on the way, right? Before you get too ...

I kept hearing a bird chirping. At 3 a.m ... Were the birds embarrassed to be caught singing at such an unusual hour? Was it a secret ritual? Did I ruin their concert by listening in?