I'm subscribed to the South Bay Birds mailing list and while at work on September 17th I saw Eve
Meier post about a "Mystery Flycatcher" at Charleston Road Marsh:
Hi Everyone!
Patricia and I have a mystery flycatcher at Charleston Marsh. Here's our field marks:
- Small flycatcher
- Flat, not peaked head
- Very small bill
- Eye ring more prominent in the back
- Gray overall
- Wing bars?
- Long primaries not quite to tail
- Slightly forked tail
- Streaky upper breast, white belly, throat was lighter
- Perched up high in dead branches here 37.4211198, -122.0729803
Some of my coworkers and I do a daily walk looping around the marsh (which is located just
behind
our office), so on that day I had half a mind to keep an eye out for the bird. When we reached
the
advertised coordinates we found three birders already present who had found the individual and
were
attempting to get some shots of it in flight. They kindly offered us a look through their
binoculars
and identified it as a dark-sided flycatcher—a species native to Asia and never before recorded
in the continental United States (which probably meant that I was the sixth or seventh person to
ever lay eyes on it within our borders)!
Vagrancy (the phenomenon of species showing up in places where they don't belong) is a common
occurrence in the bird world, but each individual event is rare and special. dark-sided
flycatchers
are migratory birds that breed in Siberia and migrate to East Asia; it's likely that this
confused
individual followed the wrong coast south and ended up in the Bay Area as a result. Despite the
mistake, it seemed to be having a grand time: constantly flitting between trees, munching on
berries
and picking insects out of the air.
The next few days were pretty wild—when word got out that it was a rare vagrant, birders from all
over the country started pouring in to catch a glimpse. Google generously chose to embrace the
fervor and rather than block access to the site, the company reserved parking spaces, handed out
refreshments and put up notices about the bird. It made me very proud to work here.
The bird hung out in the area for a few days before disappearing on September 20th. It likely
continued further south and is enjoying a warm but lonely winter in Mexico right now.