There is something quite magical standing outside as the sky starts to lighten and the birds are all singing. I'm always surprised at how much noise a small bird like a wren can make!
http://www.youtube.com/watch?v=N2zSXq_mZ4A link to video of the dawn chorus.
I also wrote a number of poems including one about the dawn chorus while I was there.
The Dawn Chorus
From every hedgerow, every field,
from every tree and every weald,
sounds forth a salutation to the sun
as night times travels now are done.
Blackbird, robin, wren and thrush,
notes pour forth in tidal rush,
linnet warbler, sky lark high,
choral practise in the sky.
Lime tree filled with bird and song
or birdsong shaped as lime tree strong.