Colour Ringed Curlews

Three at the Gann this evening, one was the same bird present on the 4th July, one had a Silver alloy ring on left ankle, the third had three rings, one Orange above the knee - left leg. Right leg, looked like a White ring above the knee -  possibly lettered, with a White ring on left ankle. Not the best photos but maybe the combination is good enough for ID

3 Common Sands, 3 black bellied Dunlin, 7 Bartails & a juv Med Gull.