She could hear birds chirping, but didn't see many of them yet.

Birds were chirping and the morning air was turning hot.

In the tree above her head a bird chirped once.

Birds still chirped in the trees, a sure sign we were a long way from the dark of night.

The morning sun was up and birds were chirping everywhere.

As we took them down, the birds were chirping and the sun was shining.

Birds chirped news at each other right outside his win - dow.

Then the birds happily chirp away at each other until it's time to go home.

Birds are chirping, and you're walking on the sunny side of the street.

Sound effects could change over time from the sounds of a stream to birds chirping.