Thayer's Gull (thayeri)(last update: January 22, 2013) |
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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. |