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, January 23 2013, Quidi Vidi Lake, St. John's, Newfoundland. Picture: Jan Baert.

Age adult winter, lacking brown wash on primary coverts. Note the indistinct division between the white tips of the primaries and the slightly darker, greyish centres. Note also slender bill, pale iris.

Wingtip darkness score: 3 - blackish grey (Estimated Kodak 14-17). In the study by Howell & Mactavish, about 5% of Kumlien's Gulls in New Foundland belong to this category, see Table 1.

Wingtip scoring for dark markings on P5-P10: ?-?-4-4-4-2. See Plate 1 for explanation.

Wingtip pattern category: -

Iris colour variation: 1 - iris overall pale brown or honey coloured. In the study by Howell & Mactavish, 2% of the Kumlien's Gulls in New Foundland belong to this category, see Table 3.