Whooper Swan (Cygnus cygnus)
Little Tern (Sternula albifrons)
Same size as Mute Swan. Adults pure white and juveniles greyish. The bill is black with a yellow wedge reaching well beneath the nostrils. Juveniles differs from Mute Swan in lacking black lores, and having a pink tinge to the grey bill.
Sound:Quite vocal. Trumpet-like clear honks of half a second length most frequent in flight and take-off/landing. Often voiced with a register break.
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
CCSounds:Hannu Jännes,http://www.xeno-canto.org ,Creative Commons Attribution-NonCommercial-ShareAlike 4.0
White forehead with white wedge above eye in all plumages. Legs, and most of bill yellow in adult breeding plumage. Very small and longwinged tern. Only 2/3 of size of Common Tern. Head and bill proportionally longer than Chlidonias species and congeners, while tail is shorter. Back paler grey and belly whiter. First primaries form a dark front edge to wing. In winter the bill darkens, legs turn a dirty yellow and the white forehead expands. Juvenile resembles adult winter, but has yellowish bill base and scale patterned back. Flight fluttering with rapid wing-beats, which together with size, is usually sufficient to determine the species.
Sound:Fairly distinct voice. Contact call a sharp "kitt", often combined to form undulating, rolling series. Not as sharp and penetrating as Common- and Arctic Tern.
Contact call:
Distribution:
Xeno-canto: map
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CC