The male chirping his distinctive call.
The subdued female circling,
and then eventually settling on the nest.
I watched them for about 1 hr from 630 to 730. Both the male and female visited the nest, but I did not see a feeding. Hard to say if there was something viable there. As for the nest itself, I cannot quite tell what its constructed of, but there does seem to be some mono-filament as well as plant fiber present. I could be wrong, but it also looks like cobwebs holding it all together.
Special thanks to Ben Cacace for sussing this one out and providing the awesome description on how to find, ie "the stonehenge benches." What really helped was the loudly singing male...just follow that call from the chipwood path.