Larus fuscus fuscus, August 04 2002, Stockholm, Sweden.
An adult fuscus with tertial #5 showing a pronounced dark centre,
which may be an indication for immaturity. There is no black on the bill
and the P10 primary mirror is rather large adult-like. An individual which is not really easily aged
and could be a sub-adult.
The tail is all white and completely present.