I think birds sing to attract a mate or set boundaries for their territory or for fun.
Check out the 'related links' below it will take you a wikipedia page on 'bird song'.
It is a slang work for cop.
The song 'allouette' is about a skylark. This is a folklore, but somewhat silly, song about the parts of the bird you will pluck.
It's a Beautiful Day is the band but the lyric is actually 'white bird in a golden cage'
it is a bird that enjoys the most hours of daylight than any other animal. A. Actually I think they mean Tern.
Tunak Tunak Tun is a song by Daler Mehndi. The words tunak tunak in the song do not actually mean anything.
My Prairie Song Bird was created in 1909.
The Bird - The Time song - was created in 1984.
Song Bird Records ended in 1979.
Song Bird Records was created in 1963.
Bird song
The "Dirty Bird" was a celebration dance the Atlanta Falcons used to do before it was banned from the NFL.
there are 16 sections in bird song