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    Larus fuscus intermedius ? - Sesimbra (Portugal)

    Hello, I agree with you: left bird is an adult LBBG "with characteristics of Larus fuscus intermedius." "Darkness value of the mantle is on the darker end of variation of this ssp, but easy within variation. Please compare to this LBBG with an even blacker mantle (and old, worn primaries, but...