Now go outside and look at the sky.
"Winged Migration" is an incredible movie about exactly that. It has some of the most amazing film footage of migrating birds that you will ever see - and to see it in a cinema with a big screen is breathtaking.
The film is only lightly narrated and allows the audience to immerse themselves in the lives of the birds on their voyages. The film makers used ultra-light aircraft, remote controlled models and even camera rigs mounted to bikes to not just follow migrating birds, but actually mingle with them while they fly along in their v-shaped formations.
As a friend who recommended this film said, "You will never look at geese the same way again".