I about a half hour this morning at Lake Merced and there were still a number of
migrants including YELLOW WARBLERS and WARBLING VIREOS. There was a kingbird
which I assumed was the TROPICAL KINGBIRD, but I didn't get a good look and was
spooked by outer rectrices that appeared to be prominently edged in white.
However, it seems improbable that the TRKI was magically replaced by a migrant
WESTERN KINGBIRD in exactly same area using the same roosts and having the same
foraging behavior.

I'll check again later this week.

Mark
--
Mark Eaton mailto:mweaton@...
SFBirds Web Page http://home.pacbell.net/mweaton
Golden Gate Audubon Web Page http://goldengate.ca.audubon.org

"Money can add nothing to what I already have. What enables me to live
better is ideals. Besides, money is like snow in winter. It
accumulates slowly, but melts away rapidly."

- Ba Jin, July 1944, from the Epilogue of "Garden of Repose"
(Foreign Language Press, Beijing, China, first edition 1988. ISBN
0-8351-1055-9)