Species:

Ruff (Calidris pugnax)

Arctic Tern (Sterna paradisaea)

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Length (cm):
26-30
33-35
Wingspan (cm):
54-58
75-85
Weight (gram):
75-230
95-120
Size group:
Thrush-size
Crow-size
Main Texts:
Appearance:

Relatively large wader with long orange or greenish (juveniles) legs. Scaly back and medium long, slightly curved and heavy bill. Male in breeding plumage unmistakable with ruff in various colours and patterns. Characteristic upright posture and body shape with long neck, small head and humped back. Conspicuous white oval patches at upper base of tail. Notable difference in size between sexes (male largest). Often seen feeding in meadows and fields when away from breeding ground.

Sound:

Generally silent. Short, muted, nasal, mono or disyllabic grunts sometimes heard.

Social sound:

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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

Featherbase

CC

CC-photo:A.J. Haverkamp, Licence,Link,

Sounds:Recorded by Jarek Matusiak,http://www.xeno-canto.org ,CC license

Appearance:

Differs from Common Tern in shorter head, and blood-red bill. Legs shorter, but tail streamers longer (extends well past wings in sitting birds). Underparts of primaries with sharply bordered dark trailing edge (diffusely bordered in Common Tern). Both primaries and secondaries transparent to sunlight. Crest less apparent than in Common Tern and underside greyer. Cheeks white just below the black cap, often in contrast to grey lower cheeks. Juveniles lacks buff coloured back.

Sound:

Similar to Common Tern but higher pitched. Typical call a series of high pitched "tip-tip-tip", and longer, ringing, high-pitched "kriiiiii" calls. The drawn out "kree-aaahh" call falls less distinctly in pitch than Common Tern.

Calls:

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

Featherbase

CC

CC-sound:Stein Ø. Nilsen, Licence,Link.

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