You may not have intended to invite this interloper to your bird feeder, but he may find it anyway. You may try to find ways to discourage him from coming; but, often, your efforts will be in vain. I had one of the pop bottle feeders hanging along the side of a tree. A squirrel came, clung to the tree with its back feet and put its front feet on the tray. You may enjoy feeding squirrels as well as birds; but if you do, expect your bird feed to disappear rapidly. They not only eat a lot, but their antics cause a lot to be spilled on to the ground. I moved that feeder from the tree and hung it from a house eave in front of a window. The squirrel was able to jump to the window ledge and lean out and put its front feet on the tray. I raised the feeder up higher so that the tray was more than a squirrel's length above the ledge. I haven't seen the squirrel since I did that.