glaucoides - kumlieni
(last update: January 26, 2012)
Iceland Gull (kumlieni) C0 adult, December 24 2014, Quidi Vidi Lake, St. John's, Newfoundland. Picture: Alvan Buckley.
Yellow C0, banded in winter in January 2012, in St. John's, Newfoundland (LAT: 47.80833; LON: -52.80833). Detailed banding data still pending.
Wingtip darkness score: difficult to estimate with overexposure by white snow, estimation is 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: 0-4-4-5-4-1. See Plate 1 for explanation.
Wingtip pattern category: Type P, Stage 5, darker grey or more extensive grey marks on the outer five primaries with complete subterminal bands on P6-P9. See primary patterns for explanation. In the study by Howell & Mactavish, only 4% of Kumlien's Gulls in New Foundland belong to this category, see Table 2.
Adult plumage with faint red on upper mandible.