coordinators:
Roland-Jan Buijs
Theo Muusse
Mars Muusse
Home
Introduction
Methods
Age, origin & sex
Retrapped Birds
Upperparts Greytone
Black on Primary Coverts
Black on Primaries
P10 and P9 Patterns
P5 Pattern
Red & Black on Bill
Iris & Orbital Ring
Primary Moult
Discussion
References
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Larus argentatus argenteus male 8cy KU, 09 May 2006, Moerdijk, the Netherlands.
![](hgbills/hgoku/IMG_8979.jpg)
Male. Upperparts grey tone: Agfa 5.0.
![](hgbills/hgoku/IMG_8979greyscale.jpg)
![](hgbills/hgoku/IMG_8980.jpg)
![](hgbills/hgoku/IMG_8981.jpg)
![](hgbills/hgoku/IMG_8982.jpg)
![](hgbills/hgoku/IMG_8983.jpg)
![](hgbills/hgoku/IMG_8984.jpg)
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