Rock Sparrow (Petronia petronia)
Whiskered Tern (Chlidonias hybrida)
Heavily streaked sparrow with diagnostic combination of broad, strong supercilium and white spots at end of tail. Bill deep and cone-shaped with yellow to pinkish base. Primary projection very long. End of under tail coverts pale, giving the bird a broadly barred rump. The white pearls on the short tail and the long wings are conspicuous in flight. Adults with yellow throat-patch, although this is often hidden in many postures. Agile flight, much superior to Passer with regards to both speed and maneuverability.
Sound:Large repertoire of calls of which many recalls Passer, but all with a nasal timbre. Main contact call a nasal "peey-u", rising sharply in pitch and then ending one note lower on the last syllable. Recalls alarm call of Serin in timbre. Sometimes given with only the first syllable. Also a short and explosive "pit", and many less distinct calls when interacting.
Main contact call:
Distribution:
Xeno-canto: map
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.