glaucoides - kumlieni

(last update: January 26, 2012)

Kumlien's Gull (kumlieni) adult metal band 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: 2.5 - medium-dark grey (Estimated Kodak 11-13). 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: 0-0-4-5-4-1. See Plate 1 for explanation.

Wingtip pattern category: Type H, Stage 3, darker grey or more extensive grey marks on the outer four primaries with complete subterminal bands on one to three primaries. See primary patterns for explanation. In the study by Howell & Mactavish, about 12% of Kumlien's Gulls in New Foundland belong to this category, see Table 2.

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: class 1 - speckling 0%-1%.