Lesser Black-backed Gull graellsii NLA 5.330.562 19CY, August 18 2015, IJmuiden, the Netherlands.
Continental graellsii from this population are also referred to as 'Dutch intergrade', upperparts between medium grey British graellsii and dark grey Scandinavian intermedius.
Ringed as pullus on June 09 1997, at IJmuiden, the Netherlands.
Local adult, probably male, in complete moult: P2/P5. Secondaries and rectrices still old. New wing-coverts growing in, obvious 'colder slate grey', lacking the brown hue of the old coverts.
|