Red-winged blackbirds have a range that includes Cincinnati, but I've never seen one locally. There have been none visiting the feeder. However, up in Canada... Here's a shot of a redwing at Niagara Falls (the 'flecks' you see on the feathers aren't pigmentation, but drops from the mist of the falls), and another from a park in St. Catherine's, where Denise and I strolled a bit.




From:
Without checking...
The yellow-headed blackbird is even more tied to marshlands, and I don't think I've ever seen one away from water. http://www.allaboutbirds.org/guide/Yellow-headed_Blackbird/id