Appearance:

Large tern with black bill, with yellow tip (adults). Bill all black in juveniles. Long black cap and shaggy crest. Generally leaves a much whiter impression than other terns in the region (except Roseate Tern). Adult summer: Yellow bill-tip. Tail pure white, and upperparts pale grey. Outer primaries darker than rest of wing, and contrast increases in worn plumage. Broad white trailing edge to inner wing. Underside of primaries with faint narrow dark trailing edge. Forehead white in adult winter and first winter plumage. Juveniles: scaly upperparts and dark bill. Less evenly coloured than juvenile Gull-billed Tern. First winter birds similar to juveniles, but back purer grey and bill shorter. Can be mistaken for Gull-billed Tern, but note different profile. Flight powerful with evenly narrow wings and a front-heavy appearance, due to the long head and bill. Often dives from high above the surface and stays under water longer than Common and Arctic T.

Sound:

Contact call a sharp and grating "keeree-eek". Often compared to the pressing of amalgam into a tooth.

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

CC-photo:Paul:Ritchie, Licence,Link.

CC-sound:Peter Boesman, Licence,Link.

Appearance:

Small, compact lark with finch-like bill. 30% smaller than Skylark. Primaries almost completely covered by tertiaries, as opposed to Lesser Short-toed Lark. Upperparts typical lark-like, while underparts are almost unstreaked. Most individuals shows small, black shoulder patch. Bill deep, but pointed. Base colour variable, but western birds usually warmer brown than eastern. Lacks crest. Crown is rather flat (often rufous) and head squarish. Tail black with buff centre and pure white outer feathers. Often forms finch-like flocks when not breeding. Flight moderately undulating.

Sound:

Contact call a dry, short and House Sparrow-like "chirrrp", with a high-pitched component. Shorter than Skylark, and crisper and straighter than Lesser Short-toed Lark. Song usually performed high in the air, but can also be heard from the ground. 2 types of song. Either in short phrases with a typical duration of 1-3 seconds each, with stuttering introduction, and falling cadence. Other song type more confusing and harder to identify, consisting of a continuous stream of energic improvisation. Listen for interwoven contact calls, and lack of Lesser Crested Lark calls. Frequently mimicks other species.

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