Whilst birding Dhahran Waste Water Lake 7 September, I came across eleven White-winged Terns. Including some juvenile birds. The location and light conditions allowed several photos to be taken some of which are shown below. In Saudi Arabia the White-winged Tern is a common passage migrant, local winter visitor, erratic summer visitor and possible breeding resident. They normally occur in small groups of up to twenty birds, but recently in the Jubail area in late summer early autumn large gatherings of over a hundred birds have been recorded in the last few years. Adults in breeding plumage occur from March to early June and in early August juveniles appear and are seen through to December. Birds are most often seen near the coast but have occurred well inland with one seen at Haradh in September. White-winged Tern is much commoner than the similar Whiskered Tern in the Eastern Province of Saudi Arabia.