Colorado UFO (1963)

I've long been fascinated by this alleged UFO, of which I have listed five (5) videos of it from YouTube:

https://youtu.be/eJjAYjdPL7Y

https://youtu.be/tLKBL_7luCI

https://youtu.be/xqkJfKzaSgQ

https://youtu.be/00ADJidlAts

https://youtu.be/wpBlLjEn8mM

There are a number of copies on YouTube but you should find one from the above that provides a fairly good image, some displaying the image at varying screen speeds.

The only explanation I've ever seen is "an insect flying by the photographer." That's a stretch; the insect would be scooting along at a supersonic rate.

RR