Gulls in NW Europe

(last update: September 25, 2011 )

Herring Gull (argenteus) 5.425.481 adult, September 2011, January 2012 & August 2015, IJmuiden, the Netherlands.

Ringed as 4+cy bird on July 22 2010 at IJmuiden harbour, The Netherlands.

below: 5.425.481 (argenteus) August 23 2015, IJmuiden, the Netherlands.

P7-P10 old in right wing, P6-P10 old in left wing. P1-P3 fully grown, P4 at length of P2.

below: 5.425.481 (argenteus) January 13 2012, IJmuiden, the Netherlands.

Winter plumage.

below: 5.425.481 (argenteus) September 11 2011, IJmuiden, the Netherlands. Pictures: Maarten van Kleinwee.

Adult Herring Gull moulting to winter (basic) plumage. The red colouration is caused by iron dust or dye with which it has been in contact. P5 / P8. P6 already beyond P4 in length.