Sandwich Tern (Thalasseus sandvicensis)
White-fronted Goose (Anser albifrons)
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
Image search Flickr NB! May give other species
CCOrange legs and all pink bill without markings. Adults with white bill base and black markings on belly. Juveniles lacking those characters. Body shape and head more angular than other geese. Could be confused with Lesser White-fronted Goose, but Lesser have an obvious yellow eye-ring, and much more white around bill base. Wings more narrow than other grey geese.
Sound:Similar to Bean- and Greylag Goose, but higher pitched, more musical, often disyllabic and with a laughing quality. Far from as high pitched as Lesser White-fronted Goose.
Contact call:
Distribution:
Wikipedia: map (se also Xeno-canto below)
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCSounds:Recorded by Volker Arnold,http://www.xeno-canto.org ,CC license