Golden Gate Audubon Society First Friday Bird Walk,
October 6, 2017, Tilden Nature Area, to Jewel Lake via the
boardwalk and back by the road.
Our theme today was Vultures, the Cathartidae family. As
with hummingbirds, this now exclusively Western Hemisphere
family did have members in Europe in the Eocene period,
about 40 million years ago. California has three vultures,
the Turkey Vulture (we had three today!), Black Vulture
(seen in Marin and Sonoma counties in 2014, 2015, 2016 and
2017 but no East Bay records at eBird), and California
Condor (the probably last wild one in the Bay Area was
seen on the Stanford campus in January,1971). There are
about 170 California Condors captive in the San Diego and
Los Angeles Zoos, and about 270 out in the wild in
California, Mexico and Arizona/Utah.
"Bird" o' the Day may have been two Ospreys that flew over
the parking lot at the end of the walk: Bell Boeing V-22
VTOL aircraft, probably in town for Flight Week this
weekend. Best Bird was the Green Heron at Jewel Lake, who
posed for us for a long time. And the Red-breasted
Sapsucker at the parking lot picnic table has possibly
returned for the third year; this bird, photographed last
year by Lee F., is featured in the Golden Gate Audubon
Society calendar for 2018.
Here are the 41 species seen by 43 observers:
Great Blue Heron
Turkey Vulture makes it official, three birds from our
Red-breasted Sapsucker may be a bird that has returned for
the third year to the same picnic table area at TNA
Best of Boids!