Appearance:

Unmistakable. Extremely long tail and short wings. Fluttering and undulating flight, with peculiar silhouette like a small ball with a long tail. Head of Northern Europe sub.sp. completely white. Continental and British birds with broad, dark supercilium. Juveniles head dark with white crown and throat. Always active and on the move in small groups.

Sound:

Song: Rapid, continuous, randomly composed sequence of bubbling,chirping sounds. Call: quite short, chirping, twittering "tzzirrret tzirrrret". Often starting at high pitch and rapidly falling, or just flat. Also a thin, slightly falling "zi zi ziii".

Contact call:

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

Appearance:

Largely unmistakable. Huge, almost all white, bird with black flight feathers, long red legs and bill. Juveniles with dark bill tip and pale legs. Easily told from Black Stork in flight by all white underparts, including wing coverts. Only flight feathers black. Wing pattern similar to White Pelican and Egyptian Vulture. Often soars high in flocks like raptors.

Sound:

Mostly silent. Loud, modulated bill-clattering from both sexes is heard during courtship/display.

Display call:

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:Tomas Belka, Licence,Link.