Difficult to separate from Yellow-legged Gull so probably overlooked. 2 were definitely observed at beach on October 13th 2009 and another October 8th 2010.
Status in KAUST
Abundance in KAUST
Places seen in KAUSTSouth Beach
Image from Shutterstock
Seasonality in KAUST (number of years since KAUST's founding when this species was observed in a given month):