Albert de Jong
Larus cachinnans 2CY & 4CY PDUS 2011 & 2013, the Netherlands. Picture: Johannes Luiten, PieterGeert Gelderblom & Maarten van Kleinwee.
Yellow PDUS and metal PLG DN-18723; ringed as pullus in May 27 2010, at Kozielno Paczkow Opolskie, Poland (50,476598 16,98173).
About 10 ring readings from 6-7 location in the Netherlands from September 2010 - February 2013.
below: cachinnans 2CY PDUS January 22 2011, Gouda, the Netherlands. Picture: Johannes Luiten.
Slight difference in moult left and right.
below: cachinnans 4CY PDUS January 11 2013, Barneveld, the Netherlands. Picture: PieterGeert Gelderblom.
Much black in tail, but hardly visible when folded.
below: cachinnans 4CY PDUS February 08 2013, Barneveld, the Netherlands. Picture: Maarten van Kleinwee.
Much black in tail.