glaucoides - kumlieni

(last update: January 26, 2012)

Kumlien's Gull (kumlieni) adult, February 07 2007, St John's, Newfoundland, Canada. Pictures: Chris Gibbins.

Age adult winter, lacking brown wash on primary coverts.

Wingtip darkness score: 2 - medium grey (Estimated Kodak 7-10). In the study by Howell & Mactavish, about 77% of Kumlien's Gulls in New Foundland belong to this category, see Table 1.

Wingtip scoring for dark markings on P5-P10: 0-0-3-4-2-1. 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: 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. Classification on speckling: Class 1 - yellow iris, speckling 0%-1%, see iris speckling).