Appearance:

Differs from Common and Arctic Tern by; noticably shorter wings, longer streamers, much paler grey upperparts, pure white underparts (faint rosy wash not very conspicuous), black bill (red base in breeding birds), dark outer primaries and no dark edge to inner primaries. Amount of red in bill increases as breeding season progresses, but also varies geographically. Wingbeats shallower and much quicker than in Common and Arctic Tern. Fishes with characteristic diagonal dives. Despite the long streamers, the birds appear short-tailed in flight, but head and bill are long and slender. The pale plumage, dark bill and giss recalls a small Sandwich Tern. Adult winter plumage with all dark bill and white forehead. Juveniles resembles juvenile Sandwich Terns, with more complete dark cap than Arctic and Common, and much more contrasting markings on back (especially to wings).

Sound:

Extremely harsh calls. Like mix of Caspian and Arctic Tern. Very hard and raspy "kreeeet", harder and higher pitched than Caspian Tern, but equally harsh. Other calls include more Arctic/Common tern-like short "kek", and similar.

Contact call:

Distribution:

Wikipedia: map (se also Xeno-canto below)

Ecology:

Birdlife ecology

Links:

Observation.org Latest observations

Video IBC

Image search Flickr NB! May give other species

Sound search at Xeno-canto

CC

CC-photo:USFWS/Southeast, Licence,Link.

CC-photo:Werner Witte, Licence,Link.

CC-photo:Anita363, Licence,Link.

CC-photo:Mike Prince, Licence,Link.

Appearance:

Very small, almost sparrow-sized, woodpecker. Most likely to be confused with Great Spotted Woodpecker, but vent never red (always in Great Spotted). Back heavily barred, and underparts streaked. No large patches of white on upperparts. Male with red crown, female purely black and white. Bill small and slender. More likely to be seen foraging in branches than most other woodpeckers. Fluttering flight.

Sound:

Frequently drums in quite long series. Much longer than Great Spotted, and without ritardando. Most common call a series of merlin-like "ke-ke-ke-ke-ke-ke" given at fairly stable pitch, and less hoarse than Merlin. Differs from Wryneck in lacking marked rise and fall in pitch, and being less plaintive.

Drumming, song:

Distribution:

Xeno-canto: map

Ecology:

Birdlife ecology

Links:

Observation.org Latest observations

Video IBC

Image search Flickr NB! May give other species

Sound search at Xeno-canto

Featherbase

CC

CC-photo:Stefan Berndtsson, Licence,Link, CC-photo:Maggi_94, Licence,Link,

CC-photo:phenolog, Licence,Link,