Based on information that I received from Claude Edwards, the compiler of
the San Diego Christmas Bird Count, I was able to find all three of the
target species in one day.

Costa's Hummingbird - A good place to look in winter is around the Chula
Vista Nature Preserve Headquarters. I saw a male and two females within
about a five minute period at around 10:15 AM. They have a hummingbird
garden and a herb garden planted around the center which attract and hold
hummingbirds year round. You have to take a trolley to get to the center
and there is a $3.50 fee per adult to get in, but it is well worth it. The
center is in a salt marsh along San Diego Bay. Also, occurring in the marsh
are Belding's Savannah Sparrow, Clapper Rail, Least Tern and Snowy Plover to
name a few. It is located south of San Diego just off the E Street (Hwy
S17) exit on I-5.

Nuttall's Woodpecker - Primarily a riparian species occurring in several
places. I found two at the Mission Hills Regional Park, one along the San
Diego River about half way to the dam site. I heard another in this area.
The second was just off the loop trail near the Visitor's Center. I heard
it tapping and followed the sound. The call resembles a kingfisher (one of
which I tracked into the brush along the river and saw). Also seen there
were California Towhee, Western Scrub Jay, Anna's Hummingbird, Palm Warbler,
zillions of Yellow-rumped Warblers, Black Phoebe and numerous other species.
The Park is located NE of San Diego off I-15 (Friar's Road Exit). It is east
of the interstate, Friar's Road becomes Mission Gorge Rd. the park is about
3 miles on the left. This is the largest open space in the area and is
heavily used by hikers, mountain bikers and rock climbers. I would
recommend an early morning or late afternoon visit.

California Thrasher - Occurs in numerous locations including Tecolote Canyon
and Cabrillo Monument. I saw a very accommodating individual along the loop
trail at Mission Hills Regional Park near the Visitor's Center in the
afternoon. Best found in early morning when they are most active.
Thanks to all who took the time to write to me!
Scott Hall
Bremerton, WA
whall at silverlink.net