New cat attraction

Why is Spike looking out of the front window so intently, totally oblivious to the sleeping dog at his left?

It is the most recent "cat attraction" set up by hubby in the front yard (who knew dogs would be equally interested in the visitors to the bird feeder?) This is a large bird feeder (almost 5 feet in height) that we found at Costco. After filling up the feeder with a wide mix of different seeds, we have seen a steady procession of birds, squirrels and rabbits (the latter eat the seeds that the birds kick off in their frenzy to get to their favorite seeds). This is an ongoing scene that seems to catch the attention of all the four footed furries in our house!