| The Iceland Gull is one of the more subtly "beautiful" of the gulls, it being somewhat dainty, though still being a gull nearly the size of a Herring Gull. It was not until the 1970's and 1980's that complete confirmation of this species was obtained in North Carolina, and for whatever reason, there was considerable controversy about a number of the earlier reports (sightings). However, its status since the 1980's has been well understood -- rare near the coast and accidental inland -- owing to better field guides and more birders seriously studying gull flocks in winter, at Cape Hatteras Point, at landfills, and at other sites near the coast. Its habitats and foraging behavior are very similar to those of other large gulls, being found around harbors, coastlines, the inshore ocean, fish houses, and landfills -- almost always amid large flocks of Herring Gulls. Before 2017 (see below), essentially all state records of Iceland Gulls could be assigned to the subspecies that breeds in North America -- L. glaucoides kumlieni -- known as the "Kumlien's Gull".
Around 1970, the American Ornithologists' Union (AOU) split out Thayer's Gull (Larus thayeri) from Herring Gull. As field guides and other references were published later on, birders became familiar enough with field marks that records for Thayer's accumulated in the state, mainly along the coast, but a few from inland landfills and lakes. However, in 2017 the AOU (now named the American Ornithological Society [AOS]) lumped the Thayer's Gull into Iceland Gull (and not back into Herring Gull). There has been more recent discussion that the Iceland Gull complex -- now with three subspecies, from west to east -- thayeri, kumlieni, and glaucoides -- is quite uncomfortable. With the splitting out of a number of other gull taxa into full species in recent years (e.g., Mew Gull splits, Herring Gull complex splits), each of the three Iceland Gull taxa, each with different breeding areas and especially wintering grounds -- West Coast, East Coast, and Europe -- are deserving of being separate species.
For purposes of this website, the physiographic province information below is broken down into the two subspecies now found in the state -- "Kumlien's" and "Thayer's", though there is a summary opening sentence for the full species.
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