On this morning's news, I heard the movie has been modifiied for the US audience :
- Natinal Geographic added a lot of "documentary" commentary and replaced some more poetic comments ...
- The original soundtrack also seems to have been replaced ...

So.... I don't really know what you girls and guys will see/hear .... I guess all this reinforce the documentary aspect of the movie.
Too bad for poetry ...

Anyway, those "birds" are real survivors .... and their way of life is quite fascinating.