Red-footed Falcon (Falco vespertinus)
Whiskered Tern (Chlidonias hybrida)
Small falcon recalling both Kestrel and Hobby at a distance, but most likely to be confused with latter. Adult male unmistakable with ashy grey plumage and rufous red "trousers". Colour of trousers not always obvious, but silvery upperwing often visible in flashes at distance. Adult female also distinct with almost unstreaked buff underparts and under wing-coverts, buff neck and crown, dark mask and white cheeks. Immature most likely to be confused with Hobby but differs in barred upper side of tail, pale forehead, white (half)collar, contrasting dark trailing edge to wing and more striking fringes to coverts. Underparts also less heavy streaked. Flight profile similar to Hobby but tail slightly longer and more rounded. Hunts insects in flight, but in contrast to Hobby, hovers frequently and with deeper wingbeats than Kestrel.
Sound:Flight call very similar to Hobby, a wryneck-like series of "kew kew kew kew", each call falling rapidly in pitch. Sometimes given in a harsher more staccato version. Very vocal at colony with various squeaky and whimpering begging calls.
Flight call:
Distribution:
Xeno-canto: map
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCCC-sound:Tomas Belka, Licence,Link.
CC-photo:Jan Thomas Landgren, Licence,Link.
CC-photo:Paul Cools, Licence,Link.
Largest 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.