I found a Yellow-headed Blackbird this morning in a mixed flock of blackbirds and starlings in Fayetteville just west of Garland Ave across the street from the University Experimental Farm (xfarm). The flocks do move around a lot, so I'm not sure it's worth a specific pin, but I did find it in the grassy field here (36.093082,-94.1803291). It moved from there a bit NW into trees off Knapp St. It wasn't able to be relocated in subsequent attempts, though, neither there nor at the xfarm proper.