Dark iris, slim bill with a faint subterminal markings on a rounded head, slightly darker upperparts than adjacent RBGUs.
Large mirrors on p10 and p9. P8 is extensively black with no mirror. P4 without black markings.
Nice profile shot between two Ringers.
Rather clean white head, with some dark speckling present on the forehead.
Preening bird, with its left wing raised.
The Common Gull is the only sitting bird with its body facing right. Note the slightly smaller size and darker mantle.
Well this one felt good. We were due in CT. I think the last (only?) one was in the 70s. This should constitute the first photographed record for CT and the first one identified to subspecies.
PS - Not bad for my least favorite time of year :)