glaucoides - kumlieni

(last update: January 26, 2012)

Dave Brown (Canada)
Bruce Mactavish (Canada)
Chris Gibbins (Scotland)
Peter Adriaens (Belgium)
Mars Muusse (Netherlands)

Presumed Iceland Gull, December 2011. St.John's, Newfoundland. Picture: Dave Brown.

Presumed L. g. glaucoides, see also Dave's weblog. Compare to Herring Gull on left and Kumlien's Gulls on right and behind. Also note similarity in Kumlien's and Herring Gull mantle shade. Note this individual shows all four key features mentioned on the weblog by Dave, i.e. pale mantle; pure, pale eye, lacking dark peppering; pure white wings and structure (structurally this bird was a little bulky, so probably a male).

This would be a "Stage 0" bird, a bird with unmarked white wingtips. This stage 0 was scored in only 4% of the adult Kumlien's at Newfoundland in the research by Howell & Mactavish. For explanation, see chart.