White Wagtail (Motacilla alba)
Common Tern (Sterna hirundo)
Grey and white wagtail with prominent black markings on head and breast. British Isles subspecies M.a.yarreli (Pied Wagtail) with black back, and M.a.alba (continental) with grey back. Only faint black markings on head in juveniles and in winter plumage, but always shows big dark breast patch. Unmistakable in breeding plumage. Pale individuals of Yellow Wagtail and Citrine Wagtail, differs in lacking large breast patch, and in contact call.
Sound:Contact calls short and sharp. Usually with disyllabic, "bouncing" quality, and with each syllable only accented, not clearly separated from the other (see Grey Wagtail). Song either slow and primitive, consisting of sharp falling notes given by perched birds, or longer fast and energic bursts in excited song-flight.
Song/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
CCDiffers 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