1cy moulting into 1st winter. Ringed as pullus in May, at Jankowice gravel-pit near Zator, south Poland. L. argentatus has never been observed in that colony, though 2 males michahellis in 2006, according to the ringer Jacek Betleja.
This individual was read and photographed in Denmark in august at http://www.netfugl.dk/pictures.php?id=showpicture&picture_id=13284