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:

Large gull with deep chest, light grey back and heavy yellow bill with red spot (adult). Pinkish legs and black tipped primaries with white windows. Winter plumage with streaked head and neck. Develops grey mantle in 2.nd winter. Young birds may be difficult to distinguish from juvenile Greater- or Lesser Black-backed Gulls, and the species shows notable variation in both plumage and size. Juveniles generally shows darker head and less contrasting markings than Greater Black-back, and pale inner primaries (window), as opposed to the all black hand of young Lesser Black-backs.

Sound:

Quite vocal. A long and strong "ay-kay-kay-kay-kay" with fading strength commonly heard. A deep "ga-ga-ga" heard from anxious birds. All calls much deeper pitched than Common Gull. Difficult to distinguish from Lesser Black-backed Gull, but tone is less nasal.

Contact call and song:

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:Jens Kirkeby, Licence,Link.