It was perched with some prey right on the bluebird box. Don't think the prey was a bluebird, though. Other birds were coming to the feeders (cardinal, pileated woodpecker, etc) while the hawk was sitting out in full view. I first thought it was red-shouldered, but got confirmation on the MNBird list that it's a broad-winged hawk. We're up to 78 on the yard bird list now!