Grey Wagtail (Motacilla cinerea)
Common Tern (Sterna hirundo)
Elegant and very long-tailed wagtail. Vent always bright yellow in all plumages. Legs pinkish flesh-coloured, not black. Wings with single white bar, visible both from below and above. Male with black throat in summer. Constantly wags tail, often in a more horizontal posture than congeners. Flight more attenuated and more bounding than in other wagtails. Attached to water and streams.
Sound:Contact call short, metallic and with a clipped ending. Often disyllabic, "tzeet-tzeet", with each syllable more separated than in White Wagtail, and timbre more "dirty". Song simple but variable. Often starts with the contact call, followed by short melodic phrases. Sometimes with more elaborate song-flight like White Wagtail.
Contact call, flight 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