Here are some photos of only my second positively identified Scandinavian Herring Gull (Larus argentatus argentatus), seen at the waste dump of Barneveld in The Netherlands earlier this week.
This subspecies can be seen here during the migration period and differs distinctly from the native European Herring Gull Larus argentatus argenteus found in The Netherlands.
Identification points are:
- The much darker grey of the mantle and wing (compare with the lighter grey of the European Herring Gull Larus argentatus argenteus).
- The complete white tip on primary P10.
- The Thayeri pattern on P9.
- The reduced black on P6-P8.
- The white tongue tips on P6-P8.
- No black on P5.
My first argentatus was a 3rd-calendar year, ringed in Russia.