glaucoides - kumlieni

(last update: January 26, 2012)

Iceland Gull (glaucoides) adult, January 31 & February 01 2012, Ottersaat-Texel, the Netherlands. Pictures: René Pop & Jos van de Berg.

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: 3 - apparently unmarked pale yellow (like an adult Herring Gull but typically slightly darker yellow). In the study by Howell & Mactavish, about 19% of Kumlien's Gulls in New Foundland belong to this category, see Table 3.

below: adult, January 31 2012, Texel, the Netherlands. Pictures: Jos van de Berg.