Species:

Great Bustard (Otis tarda)

Rufous-tailed Rock-thrush (Monticola saxatilis)

Change species:
Main Images:
Length (cm):
75-105
18-18
Wingspan (cm):
190-260
33-37
Weight (gram):
3800-8500
43-63
Size group:
Bigger than a crow
Thrush-size
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:

Compact built bird attached to rocky habitat. Differs in all plumages from Blue Rock-thrush, Monticola solitarius by short, rufous tail and shorter bill. Primary projection very long, and wing-tips almost reaches end of tail in perching birds. Male in breeding plumage unmistakable with blue-grey head, orange-buff underparts and white patch on back (variable). Male resembles female and immature birds when not in breeding plumage, but can sometimes be sexed by partly grey head and hints of white on back. General characteristics of non-breeding plumage are greyish brown and speckled upperparts, and orange-buff, vermiculated underparts. Then told from female Blue Rock-thrush by aforementioned different build, bill and tail, and also by paler throat-sides/breast and warmer rufous flanks. Posture usually upright with giss resembling more a wheatear than a thrush.

Sound:

Alarm call a soft, wheatear-like "peeu", often accompanied by harder "tek" calls. Also a very nasal, drawn-out wheeze. Song varied and pleasing, and often very difficult to tell from Blue Rock-thrush. It is generally softer, more varied and the deeper notes are less tremulous and vibrating. A higher proportion of the song is in the higher register, with fewer lower fluting sounds, and more mimicry. Both sexes sing, but females less than males.

Song:

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

CC-photo:gilgit2, Licence,Link.

CC-photo:gilgit2, Licence,Link.

CC-photo:gilgit2, Licence,Link.

Similar species (sound):
Silhouette Group:
Heron-like
Silhouette
Thrush-like
Silhouette
Several different images of the species
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Several different sounds of the species