ducklings-凯发k8官网

16-07-16 scientists from the university of oxford have shown that newly hatched ducklings can readily acquire the concepts of same and different - an ability previously known only in highly intelligent animals such as apes, crows and parrots. ducklings and o...

14-05-11 日前一名男子意外成为13只小鸭的妈妈，因为他是这些小鸭破壳而出时看到的第一个移动的东西。 a man accidentally became a mother to 13 ducklings when their eggs hatched and he was the first moving object they saw. the process, known as imprinting, is a for...