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: 1.5 - medium-pale grey (Estimated Kodak 5-6). In the study by Howell & Mactavish, about 3% of Kumlien's Gulls in New Foundland belong to this category, see Table 1.

Wingtip scoring for dark markings on P5-P10: 0-2-3-5-5-1. See Plate 1 for explanation.

Wingtip pattern category: Type M, Stage 4 (55%), darker grey or more extensive grey marks on the outer five primaries with complete subterminal bands on zero to three primaries. See primary patterns for explanation. In the study by Howell & Mactavish, about 55% 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: <5%.