{"fact":"Crows possess an incredible memory, remembering not only where they've stashed food, but also what type of food it is and how long it's been there – crucial information for perishable treats!","context":"Although the jays had no cue to predict whether or not the worms had perished other than the passage of time between caching and recovery, the birds rapidly learned that the highly preferred worms were still fresh when recovered 4 hours after caching, whereas they were rotten and tasted unpleasant after 124 hours. Consequently, the jays avoided the wax worm caches if they had been cached 124 hours earlier, and instead only recovered and ate the peanuts, which do not perish.","source":"Nicola S. Clayton, EPS Mid-Career Award 2013: Ways of thinking: From crows to children and back again, 10.1080/17470218.2014.943673","index":298}