大卫·爱登堡：歌声奇迹

婉转，清(qīng )丽，高(gāo )亢(kàng )，鸟儿在枝头(🔼)欢(huān )唱(🃏)。世(shì )(😘)界自然纪(🔱)录片(piàn )之(🤴)父爱登堡老爵(🆖)爷讲述鸟类鸣叫对于(yú )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.