Thayer's Gull (thayeri)

(last update: January 22, 2013)

Amar Ayyash (USA)
Mars Muusse (Netherlands)

Glaucous-winged Gull Larus glaucescens 1st cycle (2CY), March 06 2006, Jeune Landing, Vancouver Island, BC. Picture: Guy Monty.

Visit: Guy's Flickr photostream.

Bulbuous bill. Some similarity to Thayer's Gull, but GLAUCOUS-WINGED GULL averages larger and bulkier with stouter bill, but some male Thayer’s approach small female Glaucous-winged. Wingtips of Glaucous-winged are pale to medium brown, similar in tone to upperparts, which typically have finer and less "frosty" patterning than Thayer’s. In flight, Glaucous-winged looks plainer and less contrasting, without a dark secondary bar and contrasting two-tone outer primaries.