On 18 August 1974 Kirby Smith, Norman A. Williams and I were camped at a small lake at the base of Mt. Colonel Foster on Vancouver Island, British Columbia. As I walked around the lake my attention was drawn to the soft, rapid calls of a group of eight Vaux’s Swifts (Chaetura vauxi) skimming rapidly back and forth above the surface of the lake. The white throat and white patches extending on to the flanks on either side of the rump of a larger, silent bird with them caused me to believe momentarily that a Violet-green Swallow (Tachycinata thalassina) was with them.