glaucoides - kumlieni

(last update: January 26, 2012)

Kumlien's Gull (kumlieni)? adult, January 27 2012, St John's, Newfoundland, Canada. Picture: Bruce Mactavish.

Age adult winter, lacking brown wash on primary coverts.

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: 1-0-0-0-0-0. See Plate 1 for explanation.

Wingtip pattern category: Type B, Stage 1, darker grey marks on the outer one to four primaries but no subterminal marks. See primary patterns for explanation. In the study by Howell & Mactavish, about 9% 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.