Glaucous gull (Larus hyperboreus)

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MerlinBirdID says glaucous gull and American black duck females. 2023-10-12 13.39.32 New England
Classification: Genus Larus; Subfamily Larinae; Family Gulls (Laridae)
This bird appears across the great seas in the following continents: Europe, North America.
General: The glaucous gull (Larus hyperboreus) is a large gull, the second-largest gull in the world. It breeds in Arctic regions of the Northern Hemisphere and winters south to shores of the Holarctic. The genus name is from Latin larus, which appears to have referred to a gull or other large seabird. The specific name hyperboreus is Latin for "northern" from the Ancient Greek Huperboreoi people from the far north [2] "Glaucous" is from Latin glaucus and denotes the grey colour of the gull.[3] [more]
Vocalization: Like Herring Gull. [Link]
Physical details: length=62-68 cm, wingspan=150-165 cm, weight=964-2215 g

First documented observation : 2023-10-12 in New England.