Learning behavior. (A) An example session showing behavioral performance, reaction times, as well as individual correct and error trials (black and gray dots above the Top panel) over two novel and two familiar blocks. (B) All individual successful sessions for crow B, aligned and sorted by criterion trial. Error trials are light blue squares, correct trials black squares. The white line shows the criterion trial. In most sessions, there was a relatively steep improvement in performance after the criterion trial. (C) All individual successful sessions for crow L, as in B.