Whilst out doing my Breeding Bird Survey for the BTO this morning I found a pair of warblers flitting about in a bush beside the railway line. They looked like a dull whitethroat in that they were not as streaked on the wings nor was the throat white but more light beige. Nor was there a distict supercillium. They were making a slightly harsh "chrrk" sound.
Any help in ID'ing these would be very much appreciated.
Any help in ID'ing these would be very much appreciated.