Nightjars at night

the Canon 1DX goes up to ISO 51,200 -- I had never contemplated using it as obviously noise levels would be silly but as it got dark while out Nightjarring I gave it a go -- -later I had two males performing a battle royal chasing each other over  a clear fell wing clapping and coiking for 20 minutes with occasion breaks for a churr-off on the ground when they perched about 2m apart gently churring away -- the images are not what you would call great but if it had been an Egyptian at least you get something! most of the later ones of the two birds taken at 8000 ISO, 100th second hence not many are in any way sharp but you get the impression of the chase -- a privileged hour with the mysterious Nightjar -- a good article on Nightjars was in the latest Birdwatching Magazine by Ben MacDonald Birdwatching August 2015 pages 29-32