这里将让你重新认识“笨鸟”这个词的意思。野生乌鸦通常会利用小树枝来探寻食物。有只抓来的乌鸦名叫贝蒂,它对这一常用工具的使用作了进一步的发挥。“为了解决一个新问题,她做了件以前从来没有动物做过的事。”动物行为学家阿列克斯·卡塞里克说。她想法做出一个钩子,将由研究人员装有食物的“小桶”从一个筒状的容器中提上来。她将一段直铁 This will allow you to re-recognize the meaning of the word “stupid bird.” Wild crows often use small branches to search for food. A raven named Capitie, captured only by the use of this commonly used tool to further play. “To solve a new problem, she has done something that no animal has ever done before. ” Animal behaviorist Alexis Cassell said. She thought of making a hook that would lift the “buckets” of food stuffed by the researchers from a cylindrical container. She will be a straight iron