{"fact":"Crows can figure out which string to pull even when the treat is closer to the end of a string that isn't connected to it, showing they can tell which string is the right one.","context":"The results from solution of “complex” tests, in which the bait was located closer to the end of the “empty” string...showed that birds were in fact able to follow the connection of the string and the bait.","source":"M. S. Bagotskaya; A. A. Smirnova; Z. A. Zorina, Corvidae Can Understand Logical Structure in Baited String-Pulling Tasks, 10.1007/s11055-011-9529-z","index":435}