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 vulture with characteristic flight profile, and distinct plumage with white body, white coverts and black flight feathers (in adults). Long, wedge-shaped tail, but not longer than wings are broad (as opposed to Lammergeier). Wings square with broad, full hand (slightly pointed in Lammergeier). Small head with thin bill. At long distance plumage of adults slightly similar to White Pelican, White Stork and pale Booted Eagles, but note wedge-shaped tail. Immature birds dark brown with paler coverts. Despite the less distinct plumage, the silhouette is similar to adults. Noticeably more active wing flapping and quicker wing-beats than in the large vultures.

Sound:

Almost never heard. May emit different grunting sounds and a slightly mallard-like "ga ga ga ga ga ga ga".

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

CC