Photos A & B: [7246 & 7247] = Vaux's Swift gliding in a steep bank turn with tail and wings flared.
  

Photos A & B: [7246 & 7247] = Vaux's Swift gliding in a steep bank turn with tail and wings flared.
  

Photos C:  [7256] = Vaux's Swift in momentary straight glide. Note wing position during straight glide is down from horizontal by several degrees.
  

Photos D: [7257] = Typical of many photos due to difficult photo conditions of overcast day, rapid wing-beat, slow shutter speeds, rain, and numerous other excuses that mostly boil down to a very amature photographer. However, if this is not documentation of the often noted comparison of a Vaux's Swift to a flying cigar, than what is?
  

Photos E: [7259 & 7239] = Attempts to capture the upper side of a Vaux's Swift to document pale rump and distinguish it from Chimney Swift ( a difficult task considering the rate of speed that the subject is moving in low light with a busy background of willows. Although blurry, 7239 shows the best pale rump of any of the photos and resembles what I was seeing more clearly through my binoculars.
  

Photos E: [7259 & 7239] = Attempts to capture the upper side of a Vaux's Swift to document pale rump and distinguish it from Chimney Swift ( a difficult task considering the rate of speed that the subject is moving in low light with a busy background of willows. Although blurry, 7239 shows the best pale rump of any of the photos and resembles what I was seeing more clearly through my binoculars.