Short abstract from the book: Yellow-legged gulls and Caspian gulls are rare visitors in
Denmark. They are most often observed during August-September among herring gulls in southern and eastern
Denmark. Until recently, the two taxons, yellow-legged and
Caspian gulls, were treated as the same species, and most individuals have not been assigned specifically to yellow-legged or
Caspian. 17 individuals identified as either Caspian or yellow-legged gulls have been ringed in Denmark – mainly Caspian
gulls ringed in Eastern Denmark in August. 11 of the 17 birds
were ringed in their first year of life. Nine of the ringed gulls
have been recovered (152 recoveries). One of the birds was
controlled 121 times between September and April during
six years (always within 6 km of the ringing site). Five of the
birds were recovered from abroad: in Sweden (1), Poland (3)
and Italy (1). 47 yellow-legged/Caspian gulls ringed abroad
have been recovered in Denmark: 15 from Ukraine, 5 from
Germany, 10 from Poland, one from Belarus and 16 from
Italy. 10 of the Italian gulls were recovered in Denmark in
their first autumn and three in their second calendar year.
Read more about the species in the chapter from The Danish Bird Migration Atlashere
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