Great Bustard (Otis tarda)
Rough-legged Buzzard (Buteo lagopus)
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:
Distribution:
Wikipedia: map (se also Xeno-canto below)
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCCC-photo:cruzperezmanuel, Licence,Link.
CC-photo:Viskens Michel, Licence,Link.
CC-photo:Paul Dirksen, Licence,Link.
Variable plumage, but not as varied as Buzzard. Prominent black carpal patches and broad black terminal band on tail in all plumages. Upperparts dark and speckled, underparts pale. Head is paler than back, and base of bill paler still. Conspicuous white base of tail, and upperside of tail contrasts with the dark back. Female with big black belly patch, and one broad terminal band on tail. In males the belly patch this is less prominent, and the tail has 1-2 narrow bands in addition to the terminal one. Only other raptor with white tail and broad terminal band in the area is young Golden Eagles. These can be identified by size, and by showing 6 fingers, not 5 as in Buteo (Buzzards). Soars with slightly more raised wings than Buzzard.
Sound:Most typical call a wailing, mewing "peeoooo". Quite similar to Buzzard, but the pitch falls more evenly throughout the whole call.
Alarm call:
Distribution:
Wikipedia: map (se also Xeno-canto below)
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CC