Descriptions and Notes
In this paper, the Atlantic Yellow-legged Gulls found at Tenerife in the Canaries have been selected for the main description. This form appears to be the most central in appearance with those in the Azores forming one extreme and those in north Spain another. This form has also been observed both in mid-winter in December and in the post-breeding season in August. Other forms are described in terms of their significant variation from the Tenerife birds or where additional information is available. Experience in south-west France is also related where this is relevant to the overall picture. A number of tables summarise statistical information on calls, wingtip patterns, moult condition and first-year appearance.
The locations visited within each area are listed at locations visited together with the number seen.
Eastern Straits of Gibraltar (Spain)
Western Straits of Gibraltar (Spain)
West Andalucia michahellis
North Portugal/North-west Spain
South-west France michahellis
South-west France argenteus