婉转,清(qīng )丽,高亢,鸟儿(ér )在枝头(🔼)欢唱。世(😘)界(jiè )自然纪录(🕰)片(piàn )之(🤴)父(fù )爱登堡老爵爷讲述鸟类鸣叫对于(🐮)种群(💤)的意(🎾)义(yì )。 David Attenborough chooses seven of the most remarkable animal songs found in nature and explores the significance of these songs in the lives of their species.
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