I was never so impressed with the intelligence in those pea sized brains ... when I was living with my parents in Chattanooga, we had a bird seed / squirrel problem with a feeder that was mounted off the edge of a 2.5 story deck. They invested in a bird feeder that the roost post was counter weighted...anything other than a bird that stood on the post to get at the seed holes would be too heavy and a steel plate would swing shut over the holes. We laughed watching the squirrels dumbfounded at where the seed went when they jumped on the feeder....that is, until one week later. We saw a little tiny baby squirrel, who wasn't heavy enough to trigger the counter-weight, standing on the perch shoveling seed between his legs like a dog digging a hole. A glance over the edge of the porch rail revealed 12 adult squirrels eating it up as it hit the ground. Bastards.