A woodpecker, in fact! It was very stormy last night--some of my neighbors lost big tree limbs and my neighbor across the street has some patio furniture cushions far, far away from the house. The bird feeder was fine, though I could hear it hitting the metal flashing on the pole as the wind whipped it around.
I refilled the feeder this morning, and this evening we went to Costco-- and discovered that they sell ENORMOUS bags of cardinal feed, so I bought a bag. It might be once I put it out, the birds will say meh--they didn't like the Target seed. If they hate it, I will put the seeds into the compost and go back to Home Depot for the Songbird Supreme. That stuff actually smells kind of good when you open the bag. :D