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.
- Thể loại: Phim Tài Liệu
- Quốc gia: Germany
- Giám đốc: Phil Coles
- Diễn viên: Andy Wisher,