[EBB Sightings] Redhead Hen at Lake Merritt?

I've never seen one there (or at all) before, but I can't figure out 
what else it might be: All even medium brown, more toward cinnamon on 
the head, dark eye, no white whatsoever at the base of the bill, which 
is long but ducklike (not a Canvasback's ski jump) and dark slate gray, 
with a black tip set of by a clear white band.

She's swimming around with the whore-birds between the nature center and 
  the first island right now (or was, 20 minutes ago), cadging for 
bread. The flock there is mostly Lesser and Greater Scaup (all drakes 
except for two or three hens), coots, and mutt ducks, along with one 
Ring-Necked drake and several gulls that look like 
California/Glaucous-Winged crosses.

-- 
- Hilary Powers - hilary at powersedit.com - Oakland CA -
-   Freelance copyediting and developmental editing  -
-      The edit you want, when you want it done.     -