1.   I could hear the birds singing outside my window.

2.   I heard some birds fluttering their wings outside the window.

3.   I woke up to hear the birds singing outside.

4.   We would hear the birds singing all around us.

5.   We heard a bird that had a very loud and unusual call.

6.   Do you hear the birds singing?

7.   Other one would learnt how to open a crack, and it were in that cage, and it could hear birds outside.

8.   Can you hear the birds singing?

9.   You can hear the birds singing.

10.   And the air is cool and clean, and you can hear the birds in the trees and the rustling leaves.