When I look at birds and animals, their survival is without rules, without conditions, without organization... that's nature.
Any other "intelligent" quotes about beauty of nature that could fit more or less. The latter is prefered because I am not in a hippie mood today. But perhaps you are?
PS: Ditroi, yes its kind of sad. But believe me, air flight and bird life, dog and cat...
And some say the bird strike video is a hoax anyway.