@pokypinkdogThey do not inhabit the American continent.
We also have the black and white magpie, which is a Euro-Asian species as well.
Also verysmart.
Often we see them throwing walnuts into the street from the traffic lights,waiting for the cars to crush the shell,and then they go down and take the kernel.
Fortunately, in our cities, we have plenty of walnuts and hazelnuts in the parks, various types of plums Even when it's winter and snow, there are always fruits under the fallen leaves.