Great Black-backed Gull (Larus marinus)

(last update: July 12, 2015)
Coordinators:
Jean-Michel Sauvage (France)
Morten Helberg (Norway)
Nils Helge Lorentzen (Norway)
Mars Muusse (Netherlands)

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Great Black-backed Gull (Larus marinus) NLA 6.038.628 March 2007, October 2011 & October-December 2015, IJmuiden, the Netherlands.

Ringed as 1cy metal tibia NLA 6.038.628, on October 08 2006 at IJmuiden, the Netherlands by Frank Majoor. No provenance on origin.

below: 2cy VTO 6.038.628 March 05 2007, IJmuiden.

A Dutch ringed bird with almost all scapulars 2nd generation. 

below: Stef Waasdorp.

below: 5cy VTO 6.038.628 October 16 2011, IJmuiden. Picture: Maarten van Kleinwee.

Intimidating adult.

Moult: P7 / P10; S2.

below: 6cy VTO 6.038.628 January 13 2012, IJmuiden, the Netherlands.

below: 10cy VTO 6.038.628 October 29 2015, IJmuiden, the Netherlands.

P7 fully grown.

below: 10cy VTO 6.038.628 December 03 2015, IJmuiden, the Netherlands.

P8 fully grown, P9>P7, P10=P5. PMS=47.