Thank you everyone for your replies! I imagine oliver's behavior stems back to his horrible start in life from being abandoned. He cried at my window for 9 nights in a row until I finally coaxed him out from under a shed by meowing like a small kitten. I can only wonder what my neighbors were thinking,LOL! He's so loved now, and I'm sure he's just making sure it stays that way!

Thank you again

Jenn