猫捕鼠,马避敌,河狸筑窝,百鸟歌唱。动物的这些本领是生来就有的吗?不,这是它们的父母进行教育的结果。美国纽约洛克菲勒大学的科学家彼得·马勒发现,小鸟在出生两个月后才开始放声歌唱,而在这之前,它必须经常聆听大鸟的歌声,并进行一段时间的唱歌练习。从小离开父母、由人工单独喂养的小鸟,是成不了“歌手”的。它们虽然天生就有发声能力,却只能发出几种单调的声音。 Cat catching rats, horses to avoid enemies, beaver nest, birds singing. Are these abilities of animals inherently present? No, this is the result of their parents' education. Peter Mahler, a scientist at Rockefeller University in New York City, found that a bird started singing and singing only two months after she was born. Prior to that, she had to listen to the birds singing and practice singing for some time. Small birds who left their parents and were fed by themselves alone could not become “singers”. Although they are inherently vocal, they can only make several monotonous sounds.