OK, I'm pretty sure it's a Least Sandpiper, but it's always difficult with these peeps.
It was foggy as all heck this morning, and the GBH was a little too far away, so I checked the other opening in the marsh grass. Hoping for peeps, I found one. This little guy was pretty daring - but cagey. He'd come within 5 or 6 feet of me, but only if there were some bushes in the way. Otherwise he'd run out to about 10 feet away. Being cagey myself, I aimed between the bushes and managed several shots.
Not the greatest shots, but I'll take a close-up peep any day.




