Little Bustard (Tetrax tetrax) -> Griffon Vulture (Tetrax tetrax) - BirdID's Bird Guide - Nord University

Species:

Little Bustard (Tetrax tetrax)

Griffon Vulture (Gyps fulvus)

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Great Bustard

Cinereous Vulture

Length (cm):

40-45

95-105

Wingspan (cm):

105-115

240-280

Weight (gram):

700-950

7500-11000

Size group:

Crow-size

Bigger than a crow

Main Texts:

Appearance:

Small bustard about the seize of female pheasant. Stocky body, small head, slender neck and fairly long legs. Male: Grey head, black neck with two white rings, finely vermiculated upperparts and white underparts. Odd short p7 in male. Female lacks black neck and all upperparts are a vermiculated sandy brown. Young and non-breeding males similar to females, but often with a hint of white breast-band and more clearly defined white underparts. Told from Great Bustard in flight by clear cut black wing-tips and primary coverts in sharp contrast to white wing, and white secondaries. Flushed birds take off in noisy, grouse-like manner with rapid wing-beats and interspersed short glides on bowed wings. Longer flight with quick wing-beats mostly below level of back.

Sound:

Wings in male produces a whistling sound when flying and in display flight. Flushed birds give a hoarse grunt "ugh". Female sometimes utters e mewing "miee". Male song a short and dry "prrrt", that is far reaching. Given from ground in display in 5 - 10 seconds intervals with raised neck-feathers and jumps in the air.

Song, wing-noise:

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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:Viskens Michel, Licence,Link.

CC-photo:Hans Verdaat, Licence,Link.

CC-photo:Viskens Michel, Licence,Link.

CC-photo:Pedro N. Ramalho, Licence,Link.

Appearance:

Huge bird of prey with almost white head, neck and ruff. Body buff and wing-coverts pale buff in marked contrast to dark flight-feathers (opposite of Black Vulture). Silhouette typical with small head and short tail. Wings with S-shaped trailing edge, and very long and widely separated primaries. Soars with wings raised in shallow V. Glides on bowed wings, with slightly folded and depressed primaries.

Sound:

Quite vocal for a vulture, but generally silent in flight. Various shrieking high notes, hissing, and harsh cackling sounds.

Squabbling: