Species:

Great Bustard (Otis tarda)

Greylag Goose (Anser anser)

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Length (cm):
75-105
75-90
Wingspan (cm):
190-260
147-180
Weight (gram):
3800-8500
2100-4300
Size group:
Bigger than a crow
Bigger than a crow
Main Texts:
Appearance:

Heaviest bird in area. Stocky with well developed chest. Male 50% larger than female. Mostly unmistakable, and differs from all other bustards in area in all plumages by pale, grey head (yellowish grey in female), clearly paler than the rufous upperparts and lower neck. Male with thick neck, rufous chest and long moustache feathers. Female with more slender neck and duller colours. In flight the big white wing-patch is conspicuous. Base of hand pale with smooth transition to dark tips. Secondaries black. When displaying the male raises wings and body feathers to a "foam-bath" posture with head held low, like a white ball of feathers. Flight heavy but majestic. Shy and alert bird.

Sound:

Mostly silent, especially away from breeding ground. Display call a short deep, hollow thud "omp", using resonating gular pouch. Most heard is a nasal grunt used in various types of excitement. Sometimes given in a flatulent series.

Excitement 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

Featherbase

CC

CC-photo:cruzperezmanuel, Licence,Link.

CC-photo:Viskens Michel, Licence,Link.

CC-photo:Paul Dirksen, Licence,Link.

CC-photo:Sergey Yeliseev, Licence,Link.

CC-photo:Cora de Groot en Ruud Versijde, Licence,Link.

Appearance:

Large, pale grey goose with bulky body and thick neck. Bill pink to orange (carrot-like), without any dark markings. Almost giving the impression of being "false". Uniform colour of body. Light grey forewing stands out in flight. Pink legs.

Sound:

Various cackling and honking sounds "gaiiiaia-ga-ga". Typically the first syllable is accented, and given with a register break into higher pitch (at 0:18 in recording).

Contact call:

Error loading Flash for sound!
See sound file


Distribution:

IUCN Redlist Map

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:brickegickel, Licence,Link.

Similar species (sound):
Silhouette Group:
Heron-like
Silhouette
Duck-like
Silhouette
Several different images of the species
ImageImageImageImageImageImageImageImage
ImageImageImageImageImageImageImageImage
Several different sounds of the species
Error loading Flash for sound!
See sound file