00:00Earth's largest birds, giants across continents and skies.
00:04A common ostrich races across African grassland on two powerful legs.
00:10Earth's biggest birds fill savannas, forests, ice, wetlands and American skies with giant bodies.
00:17Common ostriches sprint across African plains, and 9-foot adults can weigh more than 300 pounds.
00:24Southern cassowaries stride through New Guinea rainforests with blue necks, black feathers, and dagger-like claws on heavy feet.
00:32Emus jog across Australian scrubland, and their long legs carry large brown bodies through dry, open country.
00:39Emperor penguins huddle on Antarctic ice, where 4-foot adults protect eggs through brutal polar winds.
00:46Greater reas roam South American grasslands, spreading gray-brown wings while running from predators across open plains.
00:54Trumpeter swans lift white wings over Alaska and the Great Lakes, and North America's heaviest native waterfowl can top 30
01:02pounds.
01:03California condors glide above Grand Canyon cliffs, and their wings stretch nearly 10 feet across desert air.
01:10Whooping cranes step through Texas' coastal marshes, and their tall, white bodies stand nearly 5 feet high.
01:18Bald eagles perch above American rivers, then drop toward fish with wide wings and sharp talons.
01:24Wild turkeys strut through U.S. forests and fields, fanning bronze tails during loud spring courtship displays.
01:32Ostriches, cassowaries, condors, cranes, eagles, and turkeys show giant birds moving across very different lands.
01:39A condor shadow crosses a canyon wall, while a turkey fan flashes bronze in a quiet American field.
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