{"fact":"Crows possess a remarkable ability to remember individual human faces, associating them with either threatening or caring experiences for years after a single encounter.","context":"Crows pay close attention to people and can remember specific faces for several years after a single encounter. ... we kept the awake crow in a controlled physiologic condition and showed it one of the following: (i) a person wearing the mask that captured it, (ii) a person wearing the mask that fed it, or (iii) an empty room.","source":"John M. Marzluff; Robert Miyaoka; Satoshi Minoshima; Donna J. Cross, Brain imaging reveals neuronal circuitry underlying the crow’s perception of human faces, 10.1073/pnas.1206109109","index":144}