Made a very quick "down and back" to Gurnet & out to the Crescent xover to scan tide-flooded marshes. No list kept. Happy to find three Lesser Black-backed Gulls loafing on the Gurnet marsh about 100 yards from the road halfway between Plum Hills and the Gurnet. LBBG's show up 1 or 2 at a time on the beach; three together is unusual.
Also, Gadwall are regular on ponds and estuaries in Duxbury in the winter but very uncommon out on Duxbury Beach in any season (described as "a sociable duck of freshwater ponds and marshes" in Waterfowl by Madge and Burn, Houghton Mifflin). A pair was dabbling in the flooded marsh opposite the second crossover.
LBBG and Gadwall are first-of-year birds for my Duxbury Beach "patch"!