Appearance:

Large, fairly characteristic lark. Wings blackish underneath with conspicuous white trailing edge, obvious in flight. Outer tail-feathers white. Perched birds easiest identified by large black breast patch (though variable in size and shape), and very deep bill. Broad, buff supercilium and eye-ring. Leaves a robust and compact impression, with its broad wings, short tail and heavy bill. Stance usually upright when perched. Flight undulating, but less hesitant than Skylark.

Sound:

Contact call a diagnostic, ringing, resonant trill; "krrretlee". Song is similar to Skylark, but slower, louder and with more mimicry. Best recognized from the interspersed contact calls and other dry trills.

Song:

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:

Yellow legs, black to dark grey back (regional variations) and black primaries with only small white spots. Generally more slender than Herring Gull and Great Black-backed, with longer and more narrow wings, and longer legs. Winter plumage with streaked head and neck. Underside of flight feathers smoky grey. Juveniles very variable, but generally darker than Herring Gulls. Young birds with completely dark inner primaries and broad terminal band to tail.

Sound:

Very similar to Herring Gull, but tone more nasal.

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

Sounds:Recorded by Peter Boesman,http://www.xeno-canto.org ,CC license