Black-tailed Gull

Larus crassirostris

 

First view, boardwalk, Manistique, Schoolcraft County, 8 June 2024; first Michigan record (a bit of the black tail is just barely visible in this digiscoped shot).

 

Another view, south bank of Han River, Seoul, Korea, 14 July 2012 (crummy shot made without telephoto lens).