Doug,
Thanks for sharing the clips of the Swifts this summer. It gave me and I am sure many others a fabulous insight into their nesting habits and the raising of their two chicks until they had successfully fledged. I was amazed at how big their mouths are, reminding me of a basking shark and the struggle to exercise their wings in a cramped space to gain muscle strength for when they eventually fly the nest. A fantastic small bird which I now admire more after watching your videos. Well Done.