Appearance:

Differs from Baillon's Crake in long primary projection in all plumages. At least 5 tips of primaries visible behind tertials. Adult birds show red base of bill, but this is sometimes difficult to see and immature may lack this altogether. Male with lead grey underparts, female with grey face and buff underparts. Immature with barred and spotted underparts but less so than immature Baillon's. The crown is also more evenly dark together with dark ear coverts. The species appears slimmer than Baillon's Crake due to longer neck, tail and legs.

Sound:

Rich repertoire of calls used freely in breeding season. Male song diagnostic. A loud series of short, nasal ascending "quek" repeated every one and a half seconds or so, before accelerating and descending at the same time to a more guttural voice. Female song with similar short "quek" but with less pure tone and in shorter series (sometimes just one call), immediately followed by a rolling trill.

Male 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-photo:Rudo Jureček, Licence,Link.

CC-Photo:Arie en Anneke Kolders, Licence,Link.

CC-Photo:Jorrit Vlot, Licence,Link.

CC-photo:gilgit2, Licence,Link.

CC-photo:gilgit2, Licence,Link.

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.