Heuglin's Gull L heuglini
1-2: © Visa Rauste, 14-06-02. Syktyvkar, Russia.
A bird similar to the previous bird, including moult. A few outer secondaries still are juvenile. All juvenile primaries still are present. This individual illustrates that heuglini can have pale webs to the primaries and an apical spot (best visible on P2-3).