After hearing Paul's message I rushed up to the Mt. Arriving about 9:15 I found the Willow Flycatcher in the Ravine and the Ash-throated further down the tail on the north face of the Mt., near the clump of dead Eucs. Brian Fitch showed up then Rich Ferrick. We watched the Willow for a while but heard no Am. Redstart. Brian headed up to the top and searched in the forest there, while Rich and I scanned the Ravine. Brian came back having found the bird on the western slope, below the cross along the main road to the top. It was still singing and foraging rather mid way in to the canopy when I finally got on it. The bird ran afoul of a Wilson's Warbler and I lost sight of it at that point. This was about 10:30.