鹦鹉，叫声喧闹，毛色绚丽，通常远离原产地。看似不起眼，但它们正在全世界范围内占据我们人类的城市。从澳大利亚悉尼到德国斯图加特，再到美国，几乎没有哪座大城市中没有鹦鹉的身影。然而，鹦鹉同时也是最濒临灭绝的鸟类之一。虽然在人类城市中得到了大量繁殖，在野外，许多鹦鹉品种都岌岌可危。在墨西哥，人们建立了繁殖中心，人类父母教授雏鸟们鸟生必备技能，然后放生到国家森林公园的丛林中。本片揭示了城市鹦鹉兴起、野生鹦鹉却衰败的原因，探索了鹦鹉复杂的社会结构，同时展示了人类为帮助鹦鹉重返自然作出的努力。

Nature: Season 31, Episode 2
Take an intimate look at the snowy owl, a bird made popular by Harry Potter's faithful companion, Hedwig.

Forget what you think you know about pigs. These remarkable animals have talents we're only beginning to understand. See how pigs have conquered nearly every habitat on Earth, thanks to their remarkable senses, intelligence, and adaptability. From the islands of Indonesia to the beaches of the Bahamas to the frozen tundra of Siberia, meet eight-inch pygmy hogs, cheetah-avoiding warthogs, domesticated pigs with super senses, and more.