Kittiwake Rissa tridactyla L 38-42cm. A true seagull: non-breeding life spent entirely at sea. Sexes are similar. Adult has blue-grey back and upperwings with black wingtips; plumage is otherwise white. Bill is yellow; eye and legs are dark. In flight, wingtips look dipped in black ink. In winter, similar but head has grubby patches behind eye. Juvenile has black ‘V’ markings on upperwing; back and upperwing coverts are grey and note triangle of white on flight feathers, dark tip to tail, black half collar and dark markings on head; bill is dark. 1st winter is similar to juvenile but gradually loses dark half collar and black tail tip. Voice Utters diagnostic kittee-wake when nesting. Status Nests colonially on coastal cliff ledges but also dockside factories etc. Non-breeding period spent far out to sea.
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144634
Kittiwake Rissa tridactyla L 38-42cm. A true seagull: non-breeding life spent entirely at sea. Sexes are similar. Adult has blue-grey back and upperwings with black wingtips; plumage is otherwise white. Bill is yellow; eye and legs are dark. In flight, wingtips look dipped in black ink. In winter, similar but head has grubby patches behind eye. Juvenile has black ‘V’ markings on upperwing; back and upperwing coverts are grey and note triangle of white on flight feathers, dark tip to tail, black half collar and dark markings on head; bill is dark. 1st winter is similar to juvenile but gradually loses dark half collar and black tail tip. Voice Utters diagnostic kittee-wake when nesting. Status Nests colonially on coastal cliff ledges but also dockside factories etc. Non-breeding period spent far out to sea.

Filename: 144634.jpg
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Date: 20 Oct 2012
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Credit: PAUL STERRY/NPL
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Model Release: No
Property Release: No
Restrictions: Nature Photographers Ltd., West Wit, New Road, Little London, Tadley, Hampshire, RG26 5EU. Tel: +44(0)1256 850661 web: www.naturephotographers.co.uk
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