basic information

Black-legged Kittiwake

Rissa tridactyla (Linnaeus, 1758)

Моевка | Үшсаусақты шағала

Northern Caspian Sea
© Galina Kondratenko


Black-legged Kittiwakes is medium-sized gull, close on Common Gull in size. It is distinguished from Common Gull by the black legs and by the absence of white patches on black tips of two first (outer) primaries. The anatomic feature of Black-legged Kittiwakes is absence of rear toe. (On position of rear toe there is only little prominence. Hereof the scientific name of Black-legged Kittiwakes - tridactyla means “three-toed”.) In autumn plumage nape and hind-neck are grey, on ears there are dark-grey patches usually crescent-shaped, but very variable in size, to the point of jointing on nape. Juveniles have same dark head pattern and also black semi-ring on the hind-neck; black angle-shaped band is along whole wing. Tail have black terminal band which is broader in center than in edges, therefore tail may seems cut from far. Yearling birds (2nd calendar year) are same to juveniles but dark patterns become paler (browner) and less in size; during the summer dark replaces to light plumage; bill is dark-yellow dark-tipped. Weight 300-530 gr, length 38-46, wing 29.7-33.0, wingspan 106-125 cm.


Single Black-legged Kittiwakes encountered on Caspian Sea, Chu river (1 November 1928) and obtained on Issyk-Kul lake. One juvenile bird recorded 9 November 2002 on Tengiz lake, but it is not proved.


Black-legged Kittiwakes is rare vagrant. Occurs on sea, lakes or rivers in October – November.


В.К.Рябицев. "Птицы Урала, Приуралья и Западной Сибири". Екатеринбург, Изд-во Уральского университета, 2000. Э.И.Гаврилов. "Фауна и распространение птиц Казахстана". Алматы, 1999. Gavrilov E. I., Gavrilov A. E. "The Birds of Kazakhstan". Almaty, 2005.


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unidentified birds


Сергей Силантьев: Для наглядности выставил скомпанованный снимок, где слева черноголовый щегол, справа седоголовый щегол, а в центре этот экземпляр....Кроме


Анна Ясько: Сергей, спасибо за доп. снимки. Птица слева на 2 фото - ближе к черноголовому, но я не уверена во второй птице (та, что справа). "Окраска верха


Анна Ясько: Сергей, вроде окрас груди нормальный для черноголового - два четких охристых пятна. Мне кажется, нужно его поместить в Carduelis carduelis.

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