Migrations: Frequent Flyers
Half of all bird species undertake annual migrations, everything from heavy-bodied swans to delicate hummingbirds. Migration is one of the most remarkable phenomena on the planet, hosts of animals of all shapes and sizes demonstrating incredible feats of endurance.
- 電影類型: 纪录
- 國家: Germany
- 導演: Phil Coles
- 演員: Andy Wisher,