Moerdijk Field Research 2005-2006
(last update: 14 August 2010)
Roland-Jan Buijs
Theo Muusse
Mars Muusse
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
Male. No red on upper mandible. Black on both upper and on lower mandibles.
above: Larus argentatus argenteus 4cy? 6T, 21 May 2005.
below: Larus argentatus argenteus 5cy? 6T, 09 May 2006.
