As luck would have it, they were still there.
I tried bouncing from bird to bird with them perched up, but they started flying pretty quick. Here's the next bird in the bunch:collared- dove). Note the outer black extends 2/3 of the way down the outer tail feather and the smoky gray undertail coverts.
Here's the last bird to flush (there were either 7 or 9, I can't remember which).