Lesser White-fronted Goose (Anser erythropus) -> Iceland Gull (Anser erythropus) - BirdID's Bird Guide - Nord University

Species:

Lesser White-fronted Goose (Anser erythropus)

Iceland Gull (Larus glaucoides)

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Length (cm):

53-66

52-60

Wingspan (cm):

120-135

140-150

Weight (gram):

1600-2500

460-1039

Size group:

Bigger than a crow

Crow-size

Main Texts:

Appearance:

Adults with white front of head reaching crown, black markings on belly and obvious, swollen yellow eye-ring. Juveniles lacks white forehead and black markings on belly. The yellow eye-ring is also less noticeable. Note that White-fronted Goose may also show faint eye-ring, limited belly-markings and extended white front to head. Leaves a more "pure" impression than White-fronted, with evenly coloured plumage, rounded body, short neck, short bill and steep forehead. Primaries are longer than in other geese, and may extend past tail.

Sound:

Contact call a characteristic, trisyllabic, yelping "ka-dyl-lyt". First syllable often with a goose-like timbre, and second and third a continuous clearer sound, with a rapid lowering of pitch between syllables. Much higher pitched than other grey geese.

Contact call:

Error loading Flash for sound!
See sound file

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

CC

CC-photo:Stefan Berndtsson, Licence,Link.

CC-photo:Sibylle Stofer, Licence,Link.

CC-photo:Fenners1984, Licence,Link.

CC-sound:Antero Lindholm. Accessible at www.xeno-canto.org/243944.

Appearance:

All white wingtips like Glaucous Gull. Told apart from latter by rounded head, longer wings and shorter, more slender bill. Bill shorter than half the length of head, and lacks prominent hook. Primaries extends well past tail in sitting birds, and the whole rear of the bird seem slimmer. Eye bigger than in Glaucous Gull, with a more "gentle" 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, but tone sharper.

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

CC