大卫·爱登堡：歌声奇迹

婉(wǎn )(🌠)转(👷)，清丽，高亢，鸟儿(🏽)在枝头欢(huān )唱。世(shì )(😘)界自然(rán )纪录片之父爱登堡老(lǎo )爵爷讲述(🛤)鸟类鸣叫对(duì )于种群(qún )(💤)的意义(📿)。 　　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.