Appearance:

Adult male easily recognized by black throat and strong white moustache stripes. Female often also with black spotted throat which, together with the moustache stripe and pale chest/belly, makes it easy to distinguish from other Sylvia. Females and immatures with pure white throat may be confused with female Sardinian Warbler, but show darker front half of head, paler and purer coloured belly and flanks (lacking brownish tinge) and white fringes to greater coverts and tertials (less obvious in worn plumage). For all plumages look for curved culmen, pointed bill and longer and squarer tail than Sardinian Warbler. Build more similar to Whitethroat than Sardinian Warbler, and also less agile than smaller Sylvia.

Sound:

Alarm call a rolling "trrrrrrrrt", similar to Spectacled Warbler, but less confluent (fewer pulses pr. sec.). Not as hard as corresponding call of Sardinian Warbler. Song a rapid mix of rolling alarm call type syllables, with interwoven single whistling notes. Rolling clearly softer than in Sardinian Warbler and often dominates the song with sequences of up to one second, giving it a very hectic feel. Each phrase rarely more than 2 seconds long. Some geographical variation exist and individuals with less rolling song easier to confuse with Sardinian and Cyprus Warbler.

Song (with extensive rolling), alarm, song:

Distribution:

Xeno-canto: map

Ecology:

Birdlife ecology

Links:

Observation.org Latest observations

Video IBC

Image search Flickr NB! May give other species

Sound search at Xeno-canto

CC

CC-photo:Oscar en Jolanda Balm, Licence,Link.

CC-photo:Arie en Anneke Kolders, Licence,Link.

CC-photo:Arie Kolders, Licence,Link.

CC-photo:Mick Sway, Licence,Link.

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.