Yesterday I was out on the lake I live at. While fishing a steep rocky shoreline near a dock I saw a small bird attacking a chipmunk. I don't know if the the chipmunk was near the birds nest but that bird was determined to chase it away. It constantly dove at the chipmunk following it around the rocks and under the dock. The poor chipmunk finally found some rocks it could squeeze between and you could see it peeking its head out looking for the bird. It was one of the funniest things to watch.