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:

Compact built bird attached to rocky habitat. Differs in all plumages from Blue Rock-thrush, Monticola solitarius by short, rufous tail and shorter bill. Primary projection very long, and wing-tips almost reaches end of tail in perching birds. Male in breeding plumage unmistakable with blue-grey head, orange-buff underparts and white patch on back (variable). Male resembles female and immature birds when not in breeding plumage, but can sometimes be sexed by partly grey head and hints of white on back. General characteristics of non-breeding plumage are greyish brown and speckled upperparts, and orange-buff, vermiculated underparts. Then told from female Blue Rock-thrush by aforementioned different build, bill and tail, and also by paler throat-sides/breast and warmer rufous flanks. Posture usually upright with giss resembling more a wheatear than a thrush.

Sound:

Alarm call a soft, wheatear-like "peeu", often accompanied by harder "tek" calls. Also a very nasal, drawn-out wheeze. Song varied and pleasing, and often very difficult to tell from Blue Rock-thrush. It is generally softer, more varied and the deeper notes are less tremulous and vibrating. A higher proportion of the song is in the higher register, with fewer lower fluting sounds, and more mimicry. Both sexes sing, but females less than males.

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

CC-photo:gilgit2, Licence,Link.

CC-photo:gilgit2, Licence,Link.

CC-photo:gilgit2, Licence,Link.