• Птиците в България
    Птиците срещащи се в България
    Всеки вид с кратко описание, снимки и видео в естесвена среда. Снимки на местообитанията, които обитава.
  • Над 400 вида птици в България
    426 вида птици в България!
    Знаете ли, че България е на второ място в Европа по видово разнообразие на птици?
  • On-line определител на птиците
    On-line определител на птиците!
    Открий и познай птицата, която си видял.
  • Хиляди снимки на птици
    Хиляди снимки на птици!
    Над 4000 снимки на птици публикувани безвъзмездно от над 150 фотографа.

Order Waders, Gulls, Skuas/Charadriiformes, Family Gulls, Terns/Laridae

Black Tern/Chlidonias niger - Summer

L 22-26 cm, WS 56-62 cm. Commonest marsh tern, breeding in freshwater marshes with patches of low, floating vegetation, often among Black-headed Gulls for protection. Summer visitor (mainly late Apr-Sep), winters in Africa. In Britain & Ireland, occasional large migrant gatherings or coastal passage, but seldom numerous.
IDENTIFICATION: Adult summer: All-black head and body, rather uniform dark grey upperparts, white undertail, and dark legs and bill; head and underparts mottled or patched with white on moulting adults in spring (before May) and summer/autumn (white feathers on head already appearing in Jun). - Adult winter (head and body plumage fully acquired Sep onwards): Much as juvenile, but upperparts plain grey, lacking scaliness, and outer 5-7 primaries darker than rest. - Juvenile: Extensive black cap and obvious dark breast-side patches; scaly pattern on darkish saddle and wing-coverts; darker carpal and secondary bars; and outer primaries not contrastingly darker than inner. Could be mistaken for juvenile Common/Arctic Tern, but note smaller size, shorter, less forked tail, slightly shorter wings, and dark breast-side patches; mode of flight (cf. above under ‘Marsh Terns’) also good clue. - 1stsummer (usually stays in winter range): Variable; like adult winter but usually differing in having darker, more worn outer primaries and darker secondaries, and on some a few scattered dark feathers on underbody and head (these safely told only in May-Jun from moulting ad.).
VOICE: Flight-call a harsh, almost multisyllabic ‘k’shlet’ (slightly recalling Little Tern), and short, nasal ‘klit’ and ‘klee-a’. Alarm-call energetic ‘ki-kiki…’, or a shrill ‘kyeh’.

Similar species
Find Birds in Bulgaria on Facebook
Ideas from nature - shirts, mugs, gifts
Big year
All European birds in one place!
All European birds in one place!
Visit
Birdwatching and Wildlife Photography Tours in BULGARIA. Cottage to rent
Bird guide for all European birds
All European birds in one place!
 
Application for smart phones
Application for smart phones