Thayer's Gull (thayeri)

(last update: January 22, 2013)
Coordinators:
Amar Ayyash (USA)
Mars Muusse (Netherlands)

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Thayer's Gull adult, January 17 2004, Capitola, CA. Picture: Jeff Poklen.

Many more pictures, visit: Jeff's Pbase site.

Iris scoring is 0.0, iris uniformly dark brown; which is found in 2% of Thayer's Gull (see HERE). Note that at very close range, there will always be detailed speckling, shifting the category from uniformly to peppered. Scoring method (video) by Howell & Elliott probably did not allow such extreme close-ups and many ornithologists in field observations would call such irides uniformly dark.