Thayer's Gull (thayeri)

(last update: January 22, 2013)

Amar Ayyash (USA)
Mars Muusse (Netherlands)

Thayer's Gull adult, January 28 2009, Parksville, Vancouver Island, BC. Picture: Guy Monty.

Visit: Guy's Flickr site.

Birds in winter (non breeding) plumage. From this picture it seems the complete moult is still in the last phase, with P8 fully grown and P9-P10 growing.