Gull Research Organisation

(last update: October 30, 2015)

Coordinators:
Amar Ayyash (US)
Bruce Mactavish (Canada)
Dave Brown (Canada)
Mars Muusse (Netherlands)

smith 1cy August
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Sub-adult plumage (4th/5th cycle, black on greater primary coverts) showing some black on bill in winter. Black on outerweb of P4.