Ever forget where you put something just a minute ago? How about if you had to find a thousand things that you hid in a thousand different places months ago?
That's not a problem for this bird, Clark's nutcracker:
This amazing little bird, a member of the famously clever corvid family, collects 30,000 or so tiny pine nuts each fall, and then hides them in about 5,000 different locations over an area of about 15 square miles.
Then in the winter, when snow blankets its natural habitat in the western United States, the nutcracker returns to collect its cache with astounding precision.