It took about 30 seconds from shutting the front door before the mockingbird was checking things out, warily. It wasn't first, though, as a not-so-wary downy woodpecker swooped in for first peck at the suet cake. Within 30 minutes I had:
Red bellied woodpecker
Brown headed nuthatch
Pine warbler (well, one of the yellowish warblers, and the pine warbler is common)
plus 4 bluejays swooping in like an airlift operation after the peanuts. Which are a little big for their aerodynamics, so watching them fly off was amusing. Later a towhee appeared for ground scavenging, and today the mourning doves have found it too. Also a little tiny gray bird that I haven't gotten a good enough look at to identify, and a titmouse.
The squirrels found the peanuts, too, so the traffic was alternating squirrels and jays for a while. One squirrel was industriously hiding most of his peanuts in the deep litter of oak leaves around the feeder, never to be found again, I imagine.