Thayer's Gull (thayeri)

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

thayers rings
thayers PDF's

thayers 1cy August
thayers 1cy September
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thayers 1cy November
thayers 1cy December

thayers 2cy January
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thayers 2cy December

thayers 3cy January
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thayers 3cy April
thayers 3cy May
thayers 3cy June
thayers 3cy July
thayers 3cy August
thayers 3cy September
thayers 3cy October
thayers 3cy November
thayers 3cy December

thayers sub-ad January
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thayers sub-ad May
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thayers sub-ad November
thayers sub-ad December

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thayers ad December

Thayer's Gull 1st cycle (1CY), December 2009, California, US. Picture: Chris Gibbins.

Visit: Chris's weblog.

Wide spaces between bars on undertail coverts and 'smooth' plain brown underwing coverts. Fine black bill. Extensive dark central tail-feathers and pale window on inner primaries.