Appearance:

Adults unmistakable. White head with bold black markings and orangy brown back. Even more striking in flight, with white wedge on back, large white patches at base of wings, white wing-bars and black and white tail. Juvenile and winter plumage birds with similar white patches, but with darker head and greyish, dark brown back. Underside always pure white. Leaves a robust and compact impression, with heavy bill and square head.

Sound:

Characteristic call: An explosive, hard, resonant and short "koi" or "kott" with a peculiar timbre, usually given in rapid or accelerating series. Alarm call/song more "wader-like", a staccato "kuvi-kuvi-vit-vit-vitua".

Alarm call:

Distribution:

Wikipedia: map (se also Xeno-canto below)

Ecology:

Birdlife ecology

Links:

Observation.org Latest observations

Video IBC

Image search Flickr NB! May give other species

Sound search at Xeno-canto

Featherbase

CC

Sounds:Recorded by Niels Krabbe,http://www.xeno-canto.org ,CC license

Appearance:

All white wingtips like Iceland Gull. The following characters applies to all ages: Told apart from Iceland Gull by angular head profile, proportionally shorter wings and long, heavy bill. Bill longer than half the length of head, and shows prominent hook. Primaries extends just about past tail in sitting birds, and the whole rear of the bird seem heavier. Eye smaller than in Iceland Gull, with a stern expression. Comparison with nearby Herring Gulls fruitful. Iceland Gull often smaller than Herring Gull, and less heavy, while Glaucous Gull usually larger. Impression reinforced by Iceland's agile maneuvering.

Sound:

Like Herring Gull.

Call:

Distribution:

Wikipedia: map (se also Xeno-canto below)

Ecology:

Birdlife ecology

Links:

Observation.org Latest observations

Video IBC

Image search Flickr NB! May give other species

Sound search at Xeno-canto

Featherbase

CC

CC-sound:Jarmo Pirhonen, Licence,Link.