Sorry for the late post, but managed to track down the Blue-Gray
Gnatcatchers on Sunday starting at about 2:30 - finally found them at
4:00. I had been directed to the area at the end of the quarry parking lot
and towards the small marsh on the right of the trail.
After an hour, I decided to follow some lovely Northern Flickers on the hill
side above the small picnic gazebos. After following them up and over the
hill for some photos, I was making my way back down when I finally heard the
calls of the gnatcatchers. They were in the company of the sparrows -
including the partially leucistic one.
For those searching them out I found them at lot level between the first and
second gazebos where the brush on the hill reaches the furthest towards
the parking lot.