Bird: Rissa tridactyla ( Black-legged kittiwake - Τριδάχτυλος Γλάρος)

Rissa tridactyla ( Black-legged kittiwake - Τριδάχτυλος Γλάρος)



The black-legged kittiwake (Rissa tridactyla) is a seabird species in the gull family Laridae.
In North America, this species is known as the black-legged kittiwake to differentiate it from the red-legged kittiwake, but in Europe, where it is the only member of the genus, it is often known just as kittiwake.
The adult is 37–41 cm in length with a wingspan of 91–105 cm and a body mass of 305–525 g. It has a white head and body, grey back, grey wings tipped solid black, and have black legs and a yellow bill. Occasional individuals have pinky-grey to reddish legs, inviting confusion with red-legged kittiwake. In winter, this species acquires a dark grey smudge behind the eye and a grey hind-neck collar. The name is derived from its call, a shrill 'kittee-wa-aaake, kitte-wa-aaake'.Wikipedia