Species:

Caspian Tern (Hydroprogne caspia)

Demoiselle Crane (Grus virgo)

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Length (cm):
47-54
90-100
Wingspan (cm):
130-145
165-185
Weight (gram):
500-750
2000-2800
Size group:
Crow-size
Bigger than a crow
Main Texts:
Appearance:

Very large tern, with deep, dagger-like, blood-red bill with dark tip. Large, black cap reaching well below the eyes. Grey upperparts and white underparts. Rather short tail. Outer primaries distinctly darker than the rest of upperwing, and outer underwing almost black. Unmistakable from the size alone, and leaves a gull-like impression, lacking the elegance of smaller terns. Immatures with paler bill and white forehead (as in adult winter), and markedly speckled back. Hovers and dives. Often rests on the surface, feeding like a gull.

Sound:

Easily recognized by its very harsh calls. Sometimes likened to the sound of a plate of steel being dragged across a concrete floor. Similar in harshness to Grey Heron, but more drawn, with an accented middle; "Kraaeeet", or with a double syllable start "ka-ha-kraaaeet". Immature birds begs with a penetrating, sharp whistle.

Contact call:

Error loading Flash for sound!
See sound file


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

CC-photo:lgooch, Licence,Link.

CC-photo:Muchaxo, Licence,Link.

CC-photo:ajmatthehiddenhouse, Licence,Link.

Appearance:

Smaller and more delicate than Crane. Front of neck and chest black, with long plumes. Immatures show only faint black markings on neck and head. Upper wing lacks pale patch close to alula, and show little contrast between secondary and primary coverts. Easily mistaken for Crane in flight if black chest is not visible. Identification by call then helpful. Wing beats significantly faster than in Crane.

Sound:

Recalls Crane but timbre very dry, almost rasping and pitch higher.

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:Oscar Campbell, Licence,Link.

CC-photo:yann coatanéa, Licence,Link.

Similar species (image):
Similar species (sound):
Silhouette Group:
Gull-like
Silhouette
Heron-like
Silhouette
Several different images of the species
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Several different sounds of the species