揭秘鸟类大脑，揭示其复杂的认知与行为，展现智慧与适应的惊人能力。口述他亲我下面

　　It’s used as an insult – “bird brain” – not very clever. But in the last few years research has shown that this idea is out of date. This film follows scientists discovering that bird intelligence is so advanced that birds can be compared to the great apes. Some of the most sophisticated research has involved birds from the crow family, including ravens and New Caledonian crows... (展开全部)