lbbg_03CY06_G[2U]_38A4930

Lesser Black-backed Gull graellsii 2U 3CY, June 01 2017, Utrecht, the Netherlands.

Tibia code N/G-2U and metal ring NLA Arnhem 5.509.323. Ringed as pullus on July 09 2015 at Europoort (Dintelhaven), the Netherlands (NL 5157.00 N 406.00 E), by ringer Hans Keijser.

 

Recoveries:

30-3-2016 Safi (Haven), Safi, MAROKKO 3.218,00 N 914,00 W colourring read Ruth Garcia Gorria

1-6-2017 Utrecht (Papendorp), Utrecht, NL 5.204,00 N 505,00 E colourring read Mars Muusse

 

3CY graellsii showing arrested moult after return from Morocco, Africa. Advanced moult in coverts and tertials, and all rectrices immaculate white. Secondaries replaced last winter as well, now adult-like 3rd gen (except for single feathers). Moult continued then in the primaries, with P1-P5 replaced in right wing (P1-P4 in left wing). Then moult was arrested to migrate north again.

Done