Gull Research Organisation

Thayer's Gull (thayeri)

(last update: January 22, 2013)

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

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

thayers 2cy January
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thayers 2cy August
thayers 2cy September
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thayers 2cy November
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
thayers sub-ad February
thayers sub-ad March
thayers sub-ad April
thayers sub-ad May
thayers sub-ad June
thayers sub-ad July
thayers sub-ad August
thayers sub-ad September
thayers sub-ad October
thayers sub-ad November
thayers sub-ad December

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Thayer's Gull - Plate 2c.

From: Identification and Variation of Winter Adult Thayer’s Gulls with Comments on Taxonomy, by Steve N.G. Howell & Martin T. Elliott, IN: Alula 4/2001.

Plate 2c. Terminology used in this paper; note the distinction between subterminal and medial bands.