Dungeness Bird Observatory
Another thin scattering of migrants on the land included singles of Marsh Harrier and Hobby, 160 Swallows, 12 Tree Pipits, ten Grey Wagtails, two Redstarts, a Whinchat, four Blackcaps and 14 Willow Warblers.The juvenile White-winged Tern was still feeding at the Patch along with three Little Gulls, 14 Arctic Terns and two Black Terns and several Arctic Skuas were also feeding offshore. Two Sooty Shearwaters also flew east and two Grey Plovers and five Bar-tailed Godwits flew west.

White-winged Tern Chlidonias leucopterus  juvenile  Dungeness  1st September 2007 David Walker from DBO website