glaucoides - kumlieni

(last update: January 26, 2012)

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

Age adult winter. Note 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: 0-3-5-5-5-1. See Plate 1 for explanation.

Wingtip pattern category: Type P, Stage 5, darker grey or more extensive grey marks on the outer five primaries with complete subterminal bands on P6-P9. 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: Iris colour variation: 3 - apparently unmarked pale yellow (like an adult Herring Gull but typically slightly darker yellow). In the study by Howell & Mactavish, 19% of the Kumlien's Gulls in New Foundland belong to this category, see Table 3. Classification on speckling: class 1 - speckling 0%-1%.