Species:

Greater Spotted Eagle (Clanga clanga)

Ferruginous Duck (Aythya nyroca)

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Length (cm):
65-72
38-42
Wingspan (cm):
155-182
63-67
Weight (gram):
1600-3000
450-700
Size group:
Bigger than a crow
Crow-size
Main Texts:
Appearance:

Medium sized eagle with long, evenly broad wings and relatively short tail. Easily confused with Lesser Spotted Eagle, Clanga pomarina. Flight feathers usually paler than the dark coverts, and head and body same colour as wings. Only diffuse pale patch at base of primaries on upper wing (marked in C. pomarina). Pale base of primaries shows as "comma", but usually lacks pale base of under primary coverts, contrary to C. pomarina. Broader wings than C. pomarina, and the squarish wing-shape, short neck and tail recalls White-tailed Eagle (H. albicilla). U-shaped white patch at base of tail. Immature birds even darker than adults, and show white spots along upper wing coverts in two narrow bands. Very long "fingers" overall, and elongated 7th primary. Soars and glides on horizontal wings with drooping hand (as C. pomarina). Bill obviously heavier than C. pomarina, and yellow base and gular region stands out. Round nostrils.

Sound:

Vocal at breeding ground, and when courting. Short, barking, high-pitched whistles, not unlike a small dog. Slightly lower pitched than C. pomarina and with a fuller tone, but very similar.

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-sound:David Farrow, Licence,Link.

CC-photo:Ronald Bontrop, Licence,Link.

CC-photo:Paul Schrijvershof, Licence,Link.

CC-photo:CharlesLam, Licence,Link.

CC-photo:Ronald Bontrop, Licence,Link.

CC-photo:Bart Moons, Licence,Link.

Appearance:

Shape resembles both diving and dabbling ducks. Characteristic head profile with long bill, long sloping forehead and rather high rear crown (not unlike Pochard). White undertail usually visible also when on the water. Broad, white wing-bars and white underwing conspicous in flight. White undertail separated from white belly by brown band. Male with shining white eyes. Female with brown eye and less bright rufous tones to plumage. Immature similar to female, but with even less rufous. Immatures told from immature Pochard by by darker back, no facial markings and white (not grey) wing-bars. Note that Tufted Duck sometimes have white (but more diffuse) undertail. Beware also of hybrids with Pochard (note bill-pattern).

Sound:

Female call similar to female Tufted Duck's "kerr kerr", but thinner and with a strong, peculiar bi-tone. Male display call mostly consists of various short "chk" sounds.

Female:

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

CC

CC-sound:Jarek Matusiak, Licence,Link.

CC-photo:Linton Snapper, Licence,Link.

CC-photo:Radovan Václav, Licence,Link.

CC-photo:darwin_initiative, Licence,Link.

CC-photo:Frank.Vassen, Licence,Link.

CC-photo:Koshyk, Licence,Link.

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