I found the Ash-throated Flycatcher this a.m. about 10:30 across the road from the entrance to the Life of the Marsh trail near campsite #1.  It was very cooperative and gave great views for several minutes.

I returned in the afternoon and couldn't refind the flycatcher, though I was mostly looking, unsuccessfully, for the Northern Shrike.  Yellow-rumps were dripping from the trees!

Tom Jones
Washington, D.C.