• 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

Ring-billed Gull/Larus delawarensis - Juvenile

L 41-49 cm, WS 112-124 cm. Vagrant from N America. Numerous records annually in Britain & Ireland.
IDENTIFICATION: Three age-groups (see p. 168). Resembles Common Gull, but slightly larger, heavier-bodied, and has thicker bill. - Adult: Clearcut, broad black bill-band (beware sometimes obvious band on ad. winter or 2nd-year Common); yellow iris (brown on Common); paler grey upperparts (similar to Black-headed); faint tertial-crescent (prominent on Common); and smaller ‘mirror’. - 1st-year: Told from Common Gull by paler grey upperparts and midwing-panel, often a few obvious dark crescents among scapulars (unmarked or with only faint shaft streaks on Common), narrower pale tips to tertials, and more variegated tail pattern (broad band on white tail on Common). - 2nd-year: Like adult, but has more black on outer wing; white primary tips and ‘mirror’ (if any) smaller, and often greenish-yellow or greyish bill-base and legs; commonly has variable tail-band (usually lacking on Common). Beware that immature Herring Gull can provide easy pitfall if actually much heavier and longer bill and much larger size are not apparent (e.g. on lone bird); 2nd-year Herring resembles 1st-year Ring-billed, but tertials and coverts more mottled or barred (rather solidly dark-centred on Ring-billed), underwing rather uniformly dusky (neatly dark-flecked, and secondary bar showing through, on Ring-billed), and tail more extensively dark; 3rd-year Herring resembles 2nd-year Ring-billed, but wing and tail patterns less neat, and legs pink. - Has habit of walking about a lot. Also, adults and 2nd-winter birds appear to have remarkably loose plumage.
VOICE: Like Herring Gull’s but higher-pitched and nasal.

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