- Some run, some fly, and some swim.

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.

Release Date : 2020-01-01

Language :English

Adult : false

Status : Released

Production Company : Doclights

Production Country : Germany

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