Squirrel Proof?

Our grandson came to visit and for Sunday lunch. Then we watched the Formula One from Silverstone. 
 
Today’s picture is of a disgruntled squirrel when it found it could not get food from the squirrel proof feeder.
 
Temperature today – twenty degrees Celsius; we had thunder, lightning and heavy rain, but not for very long. At least I do not have to water the garden tonight.