glaucoides - kumlieni

(last update: January 26, 2012)
Coordinators:
Dave Brown (Canada)
Bruce Mactavish (Canada)
Chris Gibbins (Scotland)
Peter Adriaens (Belgium)
Mars Muusse (Netherlands)

PDF's
Ringed birds
Iris classification
Primary classification

1cy Aug - Dec

2cy Jan - Febr
2cy Mar - Apr
2cy summer
2cy Sept - Dec

3cy January
3cy February
3cy Mar - Apr
3cy summer
3cy Sept - Dec

sub-ad Jan - Apr
sub-ad summer
sub-ad Sept - Dec

adult January
adult February
adult Mar - Apr
adult summer
adult Sept - Dec

Kumlien's / Thayer's Gull (kumlieni / thayeri) adult, December 18 2011, Canal Park, Duluth, MN. Picture: Karl Bardon.

This bird lacks a dark sub-terminal band on P5 and has only two extremely small dots on P6 (and only on the right wing, not such on the left wing), which would be odd for Thayer's. But note that the outer-web of P9 is completely covered by black, reducing the mirror on P9 to only the inner-web, which would be odd for Kumlien's.

See als Karl Bardon's website.

(ventral)