Seven sp. of wader present inc. Sanderling and Whimbrel. A few warblers at the kilns; 4 Blackcaps and Whitethroats, single Chiffchaff and Garden Warbler. Steady passage of Swallows/H Martins/S Martins southwards, about 50 each. As well as the leucistic Oystercatcher and a very pale Kite, there was also an odd looking hirundine, a Sand Martin, I presume. It had a considerable amount of pale/white on the upperparts, giving it a mottled or marbled appearance, or even a distinct but ragged wing bar perhaps.