It is usually in the early hours when the activity begins. First off, there is constant traffic between bay window and glass doors. Back and forth. Back and forth. Fur rises along the back and the tail puffs up like blimp. Let me at ’em. Let me at ’em. Then the yowling commences. All take heed, there is an intruder around.
This can be very amusing. Until you remember it is 3:00 o’clock in the flipping morning.