glaucoides - kumlieni

(last update: January 26, 2012)

Kumlien's Gull (kumlieni) adult, February 07 2012, St John's, Newfoundland, Canada. Pictures: Dave Brown.

Age adult winter, lacking brown wash on primary coverts. Note the distinct division between the white tips of the primaries and the grey centres. Note also heavy bill, dark iris.

Wingtip darkness score: 0 - white (Kodak 0). In the study by Howell & Mactavish, about 6% of Kumlien's Gulls in New Foundland belong to this category, see Table 1.

Wingtip scoring for dark markings on P5-P10: 0-0-0-0-0-0. See Plate 1 for explanation.

Wingtip pattern category: Type A, Stage 0; unmarked white wingtip. See primary patterns for explanation. In the study by Howell & Mactavish, about 4% of Kumlien's Gulls in New Foundland belong to this category, see Table 2.

Iris colour variation: 1.5 - greenish or yellowish, extensively mottled brown. In the study by Howell & Mactavish, 4% of the Kumlien's Gulls in New Foundland belong to this category, see Table 3. Classification on speckling: class 5 - speckling >50%.