Adult with Belgian L-ring on left tibia:
European Herring Gull, 11cy, M[Bruxelles L-99798], Mew call by little-W | Studying gulls, on Flickr
Same adult interacting with adult LBB:
European Herring Gull, 11cy, M[Bruxelles L-99798], Mew call by little-W | Studying gulls, on Flickr
Nicely coloured adult:
European Herring Gull, >5cy, M[Arnhem 5425481] by little-W | Studying gulls, on Flickr
Some first-calendars, all ringed this year in IJmuiden:
European Herring Gull, 1cy, M[Arnhem 5463357] by little-W | Studying gulls, on Flickr
European Herring Gull, 1cy, M[Arnhem 5463365] by little-W | Studying gulls, on Flickr
European Herring Gull, 1cy, M[Arnhem 5463382] by little-W | Studying gulls, on Flickr
European Herring Gull, 1cy, M[Arnhem 5463387] by little-W | Studying gulls, on Flickr
European Herring Gull, 1cy, M[Arnhem 5463387] by little-W | Studying gulls, on Flickr