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) adult, February 10 2012, near Reykjavik - SW Iceland. Picture: Ómar Runólfsson.
Age adult winter, lacking brown wash on (primary) coverts.
below: Kumlien's Gull (kumlieni) & Iceland Gull (glaucoides) adults.
Birds showing general similarities between taxa, except for the outer primary pigmentation.
below: with immature (4cy) glaucoides - outer-webs not contrastingly darker than upperparts.
below: bird most right showing obvious darker outer-webs.
below: Kumlien's Gull (kumlieni) adult and 4cy.
Bird in the backbround showing dark outer primaries and paler central primaries; might be Kumlien's Gull as well, in 4cy with much pattern on tail and greater coverts, but already adult-like bill and pale iris.
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glaucoides - kumlieni