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.
- 장르: 다큐멘터리
- 국가: Germany
- 감독: Phil Coles
- 배우: Andy Wisher,