Migrations: Frequent Flyers
Migrations: Frequent Flyers
2020-01-01
50
Released
Some run, some fly, and some swim.
Overview
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.
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