A size 10 pattern giving an impressionistic view of a Mayfly dun. The body, the thorax and the head of this fly are red tying thread, with badger cock hackle palmered down the full length. The wings are large honey cock hackle feathers, trimmed to shape. This fly will trundle across the water surface; blown this way and that way by any breeze, as the fish are used to the naturals behaving in this fashion they take this fly with gusto. This pattern produces best during the main hatch, which is from the middle of May to the middle of June and it can be used on rivers or lakes.