《迁徙的鸟》的拍摄是一个巨大的工程，历时四年，跨越七大洲40多个国家，消耗460公里胶片，动用450多人，其中包括世界上最优秀的飞行员和科 学考察 队。虽然是纪录片，但拍摄得十分完美，犹如一首优雅的抒情诗。主题曲To Be By Your Side轻缓抒情，配合着鸟群高飞的镜头，气氛完美而略带忧伤。
Artist：Nick Cave
Song：To Be By Your Side
Across the oceans Across the seas, Over forests of blackened trees.
Through valleys so still we dare not breathe, To be by your side.
Over the shifting desert plains, Across mountains all in flames.
Through howling winds and driving rains, To be by your side.
Every mile and every year for every one a little tear.
I cannot explain this, Dear, I will not even try.
Into the night as the stars collide,
Across the borders that divide forests of stone standing petrified,
To be by your side.
Every mile and every year, For every one a single tear.
I cannot explain this, Dear, I will not even try.
For I know one thing, Love comes on a wing.
For tonight I will be by your side. But tomorrow I will fly.
From the deepest ocean To the highest peak,
Through the frontiers of your sleep.
Into the valley where we dare not speak, To be by your side.
Across the endless wilderness where all the beasts bow down their heads.
Darling I will never rest till I am by your side.
Every mile and every year, Time and Distance disappear I cannot explain this.
Dear No, I will not even try.
And I know just one thing, Love comes on a wing and tonight I will be by your side.
But tomorrow I will fly away, Love rises with the day and tonight I may be by your side.
But tomorrow I will fly, Tomorrow I will fly, Tomorrow I will fly.