Ruff (Calidris pugnax)
Common Tern (Sterna hirundo)
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:
Distribution:
Wikipedia: map (se also Xeno-canto below)
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCCC-photo:A.J. Haverkamp, Licence,Link,
Sounds:Recorded by Jarek Matusiak,http://www.xeno-canto.org ,CC license
Differs from Arctic Tern in longer head, and more orangy red, rather than deep red, bill. Tip of bill usually black. Legs longer, but tail streamers shorter than AT. Underparts of primaries with diffusely bordered dark trailing edge (sharply bordered in Arctic Tern). Upper side of primaries with dark wedge (less apparent in winter). Secondaries opaque. Crest more apparent than in Arctic Tern and underside whiter. Juveniles with buff back.
Sound:Similar to Arctic Tern but deeper. Lacks latter's high pitched "tip-tip-tip" call, and the drawn out "kree-aaahh" call falls more distinctly in pitch.
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
CC