Yellow Wagtail (Motacilla flava)
Whiskered Tern (Chlidonias hybrida)
Highly variable with many subspecies in different regions. Upperparts mainly grey and greenish, underparts yellow. Tail quite short compared to other wagtails, and the whole bird in profile is not unlike a pipit. Smallest wagtail in the region. Some birds are very pale below, head markings are very variable, depending on subspecies. Hybrids are not uncommon. Differs from Grey Wagtail in dark legs, only pale yellow vent and narrow wing-bars. Juvenile White Wagtails and Yellow Wagtails can be confused, but White Wagtail is greyer, with big grey breast patch (Yellow Wagtail may show narrow breast band). Closest congener is Citrine Wagtail, which lacks dark lore, has broad wing-bars and grey back.
Sound:Contact call characteristic and widely used; a sharp, drawn out "pseeeoo" with an accented ending falling in pitch. Song primitive and less striking. A variable phrase with two or three notes resembling the contact call in timbre. Beware differences in calls and songs between different subspecies.
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
CCLargest marsh tern. Liable to confusion with Sterna terns due to black cap, in addition to other marsh terns. All marsh terns (Chlidonias) differs from Sterna by lack of tail streamers, short tail with shallow fork, shorter wings and stiffer flight. Marsh terns don't plunge-dive for food but picks from surface (though Whiskered Tern may belly-plunge), mostly in fresh water. Adult Whiskered Tern easily told from other marsh terns by distinct black cap contrasting to white cheeks and throat. Underwing pale with diffuse dark trailing edge. Belly distinctly darker than Common- and Arctic Tern, but beware of variation in both species. Bill dark blood red. Adult winter: Very pale with no distinct markings except for ill-defined black mask stretching from eye to eye across nape. Forehead white and with crown white speckles. Bill black. Immature: Yellowish brown saddle with coarse dark pattern, though these are moulted in early autumn. Usually lacks dark carpal bar and cap ill-defined. Whiskered Tern generally stockier built than other marsh terns. Both immatures and adult winter show grey rump (different from Common, Arctic and White-Winged), and bill is dagger-shaped (most apparent in males).
Sound:Contact call freely used and fairly distinct: An extremely hoarse, and rasping "krreek" in various moods. Timbre comparable to Corncrake. Sometimes uttered in stuttering series "kr-kr-kr-kr-kr".
Contact call:
Distribution:
Xeno-canto: map
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCCC-sound:Patrik Åberg, Licence,Link.
CC-photo:Jurrien van Deijk, Licence,Link.
CC-photo:Geert Moris, Licence,Link.