Knock Knock...who's there

Look at this little bastard guy...the nerve! Chewed his way into what's suppose to be a birds house. This is a bird house at my mom's and the other day I was over and noticed this little guy peering out of a larger than normal bird's entrance. Look how big he made the hole to get his nuts in. Then he had the nerve to stare me down while I was taking photos!

Betcha it's warm and cosy in there. I left him a note that the rent is due.