Mew Gull Larus canus canus; heinei; kamtschatschensis; brachyrhynchus

(last update: March 12, 2012)

Kjeld Tommy Pedersen (Denmark)
Chris Gibbins (Scotland)
Frank Majoor (Netherlands)
Mars Muusse (Netherlands)

Mew Gull canus adult, June 02 2003, Vuurtorenvlakte, Maasvlakte, the Netherlands.

An individual hit by a car last week (died less than 7 days ago) just before the start of the complete moult. The upper-parts are medium grey, measured 5.5 at a 20 steps AGFA grey scale. The adult primaries have a clear-cut black triangle on the outer-wing. Black sub-terminal markings run down to P5 on this individual. From P1-P9 the primaries show extensive white tips and canus has two obvious mirrors on P9 and P10 (there may even be a small mirror on P8 as this individual shows). 
Adult brachyrhychus from the U.S. normally have a black sub-terminal band on P5-P10. Between this black band and the grey centre, a large white spot is visible both from above and below on P5-P7, creating a string of pearls on these primaries. P9 and P10 show large white mirrors.