Thayer's Gull (thayeri)

(last update: January 22, 2013)

Coordinators:
Amar Ayyash (USA)
Mars Muusse (Netherlands)

Thayer's Gull 1st cycle (1CY), December 14 2008, Half Moon Bay, California, US. Picture: Chris Gibbins.

Visit: Chris's weblog.

Pale bird with pale cetres on upper tertials (but this of course strongly correlates with 'overall paleness of plumage'). Some upper scapulars replaced, which noqw show a buffish tone and delicate 'anchor-shape'. Black bill.