Gulls in NW Europe
(last update: September 25, 2011
Herring Gull 6cy 5.414.557 January & December 2010, Leiden, the Netherlands. Pictures: Maarten van Kleinwee.
Ringed as 2cy on January 10 2006 at Herengracht - Leiden, The Netherlands.
below: 6cy 5.414.557 December 18 2010, Leiden, the Netherlands.
Sixth-calendar year European Herring Gull in winter (basic) plumage. Compared to images of 5cy, head streaking now less extensive and the black markings on the bill are much reduced.
below: 6cy 5.414.557 March 13 2010, Leiden, the Netherlands.
The faint head markings on this adult Herring Gull are a remnant of the winter plumage. Note the large amount of black markings on the bill, especially the upper mandible. The gonys spot is orange.
below: 6cy 5.414.557 January 02 2010, Leiden, the Netherlands.
Note the extensive dark markings on the bill. The gonys spot (just visible) is orange.
