Coordinators:
Dave Brown (Canada)
Bruce Mactavish (Canada)
Chris Gibbins (Scotland)
Peter Adriaens (Belgium)
Mars Muusse (Netherlands)
PDF's
Ringed birds
Iris classification
Primary classification
1cy Aug - Dec
2cy January
2cy February
2cy Mar - Apr
2cy summer
2cy Sept - Dec
3cy January
3cy February
3cy Mar - Apr
3cy summer
3cy Sept - Dec
sub-ad Jan - Apr
sub-ad summer
sub-ad Sept - Dec
adult January
adult February
adult Mar - Apr
adult summer
adult Sept - Dec
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Kumlien's Gull (kumlieni) 3cy, January 27 2012, St John's, Newfoundland, Canada. Picture: Bruce Mactavish.
Age 2nd winter: showing band on bill, patterned 2nd generation coverts, patterned rump, rounded 2nd generation primaries and dark iris.
Primary category: --
Overall dark bird, with outer primaries contrastingly dark.
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glaucoides - kumlieni