Darién Montañez, Ken Wysocki and Steve Huggins saw five Kelp Gulls, four adults and a younger (three-year?) individual, at the water’s edge in Costa del Este. We were standing on the vacant lot right next to the Corredor Sur, by the Costa del Este exit (if you’re coming from the city), and they were standing next to a few Laughing Gulls, about 25 meters away from us. These gulls were huge, and their bold black-and-white plumage made them all the more conspicuous. Our first guess was Great Black-backed Gull, but the legs of our birds were dull grayish-green, not pink. Also, they did not have bold white mirrors on the primaries like Great Black-backeds would. Their bills were big and heavy, bright yellow with a red gonys-spot. The heads were snow-white with no visible streaking, as was the neck, rump, tail and underparts of the bird. Their backs and upperwings were dark slaty-gray, darker on the primaries, with broad white trailing edges. The underwings were white, dark gray on the prima...