glaucoides - kumlieni

(last update: January 26, 2012)
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

Kumlien's Gull (kumlieni) adult E3 January 23 2013, Quidi Vidi Lake, St. John's, Newfoundland. Picture: Jan Baert.

Age adult winter. Note slender bill, pale iris.

Wingtip darkness score: 1 - pale grey, similar in shade to upperparts and primary bases (Estimated Kodak 3-4). In the study by Howell & Mactavish, about 3% of Kumlien's Gulls in New Foundland belong to this category, see Table 1.

Iris colour variation: Iris colour variation: 2.5 - pale greenish or yellowish with little or no brown mottling visible. In the study by Howell & Mactavish, 57% of the Kumlien's Gulls in New Foundland belong to this category, see Table 3. Classification on speckling: <5%.