Whatsit? - again on Skokholm Island

On our fourth day on Skokholm Island I managed to take some photographs of a bird I could not identify - not all that rare I must admit. But others on the island could not identify it from its photograph either. So I was getting quite excited that I might have found a rare warbler or something similar. When I returned home I was able to send copies of the images to Richard and Wendy from the Teifi Ringing Group so that they could identify the bird. In the end it turned out to be two birds - a male and a female wheatear! They were so wet you can see why I could not identify them: