[EBB Sightings] Pileated WP, Redwood Reg. Park ALA

Hi all:

I had a calling Pileated Woodpecker just inside the
Alameda Co. line this afternoon from 4:00 to 4:30.
The woodpecker was calling as I exited my car at the
trailhead parking area on the opposite side of the
road from the Seq. Parking area. This is just south of
the entrance to the Chabot Observatory on Skyline
Blvd.
I've uploaded a GoogleEarth map of the location where
the bird was calling from:
http://www.flickr.com/photos/14935921 at N00/
Despite some cross-country scrambling, I never saw the
Woodpecker.  I walked into the clearing just southwest
of its location, hoping to get a view, but it remained
hidden.  The woodpecker called clearly three times,
approximately every 5 minutes as I tried to locate it.
 I responded with my best approximation of a Pileated
call, to no avail (no surprise). After 15 minutes, the
bird stopped calling.
There is a clearing, visible on the map, just 50 yards
south of the parking lot, 3 or more snags in this area
show considerable Pileated drilling. The snag where I
believe the bird was calling from is directly behind
and southeast of a series of camp cabins set in a
semi-circle, 100 yards south of the parking area. 
There were two trees in this area that looked like
they'd had recent Pileated activity.

Good birding,

Bob Power
Oakland, CA