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: 0-2-2-3-3-1. See Plate 1 for explanation.

Wingtip pattern category: Type F, Stage 2; darker grey marks on the outer three to four primaries with subterminal marks on one to three primaries. See primary patterns for explanation. In the study by Howell & Mactavish, about 11% of Kumlien's Gulls in New Foundland belong to this category, see Table 2.

Iris colour variation (difficult, maybe better ignored): -