Species:

Ferruginous Duck (Aythya nyroca)

Capercaillie (Tetrao urogallus)

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Length (cm):
38-42
60-87
Wingspan (cm):
63-67
87-125
Weight (gram):
450-700
1500-5000
Size group:
Crow-size
Bigger than a crow
Main Texts:
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.

Appearance:

Very large and heavy bird with heavy bill and rounded tail with straight outer tail-feathers. Both sexes lack wing-bars. Males much bigger than females. Plumage mostly black with brown wings and yellowish bill. Females mottled brown with brick-red breast, throat and chin. Lower back greyish, contrasting with rufous, heavily barred, tail.

Sound:

Display-sounds from male unmistakable. Four phased song: First a slow introductory, double-tapping phase which suddenly bursts into an accelerating crescendo followed by a distinct pop. Then closing with grinding and hissing sounds. Female calls with a deep nasal "kok kok".

Song/display:

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:Hannu Jännes, Licence,Link.

Similar species (image):
Similar species (sound):
Silhouette Group:
Duck-like
Silhouette
Grouse-like
Silhouette
Several different images of the species
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ImageImageImageImageImageImageImageImage
Several different sounds of the species
Error loading Flash for sound!
See sound file