Thayer’s Gull Larus thayeri

First calendar year

Thayer's Gull

#TG101
October 2011
Washington, USA
Photographer: Ryan Shaw
Comment: In fresh juvenile plumage.

thgu-juv-petaluma-11-12-07-tl-02-small-lowres

#TG108
November 2007
California, USA
Photographer: Tony Leukering

Thayer's Gull, 1st winter

#TG102
November 2008
California USA
Photographer: Dave Johnson
Comment: In fresh juvenile plumage. Note the primaries, being the darkest feathers on the bird.

First Winter Thayer's Gull

#TG103
December 2008
California, USA
Photographer: Brad Schram
Comment: Juvenile plumage. Note the elongated rear, and the primaries; brownish and the darkest bit on the bird.

Thayer's Gull / Norðmáfur

#TG104
December 2010
Minnesota, USA
Photographer: Yann Kolbeinsson
Comment: Illustrating the venetian blind-effect on the primaries.

Thayer's Gull (Larus thayeri)

#TG105
November 2003
British Columbia, USA.
Photographer: Guy Monty
Comment: Note the moulted scapulars.

Thayer's Gull

#TG107
December 2011
Illinois, USA
Photographer: Josh Engel

Thayer's Gull

#TG106
December 2011
California, USA
Photographer: Oscar Johnson
Comment: Note the tail and primary pattern.

Second calendar year

thgu-form-lompoc-2-28-09-tl-05-cropsmall-lowres

#TG201
February 2009
California, USA
Photographer: Tony Leukering

thgu-form-lompoc-2-28-09-tl-03-cropsmall-lowres

#TG202
February 2009
California, USA
Photographer: Tony Leukering

Third calendar year

thgu-b2-lompoc-2-28-09-tl-1-cropsmall-lowres

#TG301
February 2009
California, USA
Photographer: Tony Leukering

Adult non-breeding

Thayer's Gull

#TG501
February 2008
Portland, USA
Photographer: warrech
Comment: Note the dark eye.

Thayer's Gull (Larus Thayeri)

#TG502
March 2009
Vancouver, Canada
Photographer: Paul & David Baker

Thayer's Gull

#TG503
October 2011
Washington, USA
Photographer: Steven Mlodinow
Comment: Outer primaries still growing.

When commenting on individual pictures, please use the birds ID mentioned beneath each picture. View all pictures of Thayer’s Gulls in the Gulls of the World-pool.

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