Photographed next to SFO International Airport on Oct. 31, 2018
At first I thought these were Western Sandpipers, since I didn't see much white at the base of their outer primaries.
But when I spotted the LESA [perhaps it's a WESA?] at far, far left and how much smaller it was, I began to think they are actually Dunlin.
I did see two Least Sandpipers in this group after they had landed, so I'm assuming the small bird in the photo is a Least.
Any and all comments greatly appreciated!
Chris