Species:

Gull-billed Tern (Gelochelidon nilotica)

Greylag Goose (Anser anser)

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Length (cm):
35-38
75-90
Wingspan (cm):
100-115
147-180
Weight (gram):
190-260
2100-4300
Size group:
Crow-size
Bigger than a crow
Main Texts:
Appearance:

Easily confused with Sandwich Tern but choice of habitat usually different. Adults differs by noticeably shorter and deeper bill, lacking yellow tip. Wings are broader, tail is shorter and only slightly forked. Lacks crest. Primaries with dark trailing edge, especially underside. Rump pale grey, and there is no contrast between grey back and white tail as in Sandwich Tern. Loses the black cap in winter, but keeps a black mask (less black on head than Sandwich T). Immature birds also gives a paler impression. The back is almost uniform in colour, and the wings also have only diffuse markings. The dark trailing edge to the primaries is present though, together with dark eye mask. Rest of head is pale. Flight slightly front-heavy with shallow wing-beats. Catches insects in the air and from the ground in flight. Rarely plunge-dives. Prefers fresh water, and is often seen near wetlands, rivers and flooded fields, but also in salt water during migration.

Sound:

Quite vocal and easily distinguished from most congeners. Mewing and sharp in tone, but not rattling or raucous like most terns. Most typical call is a disyllabic, mewing "ke-waat", with an upward inflection. Other variants are series of "ke-ke-ke-ke", or the mewing sounds.

Contact call:

Error loading Flash for sound!
See sound file


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

CC

CC-sound:Stanislas Wroza, Licence,Link.

Appearance:

Large, pale grey goose with bulky body and thick neck. Bill pink to orange (carrot-like), without any dark markings. Almost giving the impression of being "false". Uniform colour of body. Light grey forewing stands out in flight. Pink legs.

Sound:

Various cackling and honking sounds "gaiiiaia-ga-ga". Typically the first syllable is accented, and given with a register break into higher pitch (at 0:18 in recording).

Contact call:

Error loading Flash for sound!
See sound file


Distribution:

IUCN Redlist 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-sound:brickegickel, Licence,Link.

Similar species (image):
Similar species (sound):
Silhouette Group:
Gull-like
Silhouette
Duck-like
Silhouette
Several different images of the species
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ImageImageImageImageImageImageImageImage
Several different sounds of the species
Error loading Flash for sound!
See sound file