11.   The birds were singing once again.

12.   Birds sang riotously in the thick foliage, and squirrels squawked indignantly as they passed.

13.   Sun shining, birds singing, me propped up on the pillows idly chatting.

14.   A bird to match sang in a cage in the window, noisily saluting the room.

15.   But when the dickie birds sing in the trees I think we ought to try and sing like these.

16.   Bird sang in your ear?

17.   And the bird was still singing.

18.   Around them birds sang, flowers bloomed and the world seemed serene.

19.   Because the neurobiology of how birds sing has been well described, researchers will be able to look for similarities and differences between the species.

20.   Birds sang their throats raw sitting in the bare limbs of winter trees around the Victor Cemetery.