[EBB Sightings] Contra Costa shoreline train birds

On this morning's train ride, there were three birds that I don't  
normally see from the train along the Contra Costa waterfront. First,  
a drake COMMON MERGANSER was near the outflow channel just east of  
the old Hercules explosives factory site. I've seen COMMON MERGANSER  
at this location occasionally over the years, but they're not at all  
regular. Then, a few miles beyond to the west, a COMMON LOON and  
HORNED GREBE were in close proximity. All of these birds were quite  
close to shore -- with this morning's fog, they had to be else I  
wouldn't have been able to see them at all.

Good birding,
Kirk Swenson
Davis <--> Emeryville