Species:

Great Bustard (Otis tarda)

Cormorant (Phalacrocorax carbo)

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Length (cm):
75-105
80-100
Wingspan (cm):
190-260
130-160
Weight (gram):
3800-8500
1700-3000
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:

Easily confused with Shag when not in breeding plumage. Cormorant is larger, heavier built, has a thicker neck and less rounded profile. Head diagnostically wedge-shape, with the back of the head as the highest point. Bill never yellow (but yellow naked area at base of bill). Juveniles usually with whiter belly than Shag, and with less brown tinge. Behavioural differences from shag; often dives without jumping, more common in brackish water, often flies high, and often chooses higher ground or objects when perching. Slower wing-beats than Shag, with more separated primaries. Subspecies sinensis with larger gular poach angle (se fig.).

Sound:

Mostly heard at breeding ground. Coarse, vibrating calls "hahahahaharo". Also deep, rattling and creaking sounds.

Social interaction:

Error loading Flash for sound!
See sound file


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

Featherbase

CC

Sounds:Recorded by Anon Torimi,http://www.xeno-canto.org ,CC license

Similar species (image):
Similar species (sound):
Silhouette Group:
Heron-like
Silhouette
Auks/Cormorants
Silhouette
Several different images of the species
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Several different sounds of the species