Brain-dead bird

So, we have a bird that likes to visit us. He comes to the same window literally 50 times a day and pecks on it as hard as he can. It is loud. For some crazy reason he wants to get in to this nut house. Maybe he thinks this is the Psyc ward and he wants to come in for help.
It is driving me absolutely crazy. If we don't "take care of him" soon, I will be the one that my family is taking to the nut house!