After a study done by the University of Edinburgh (2006), hummingbirds were the first animal to demonstrate two of the aspects of episodic memory—the ability to recall where certain flowers were located and how recently they were visited.
愛丁堡大學 （2006年）做了研究後， 蜂鳥是最早能表現出兩方面情節記憶的動物，他們能回憶起某些花分別的位置和最近看到他們的時間。