We're no experts when it comes to UFO sightings, but someone in Nunn, a small town of 450 people just north of Greeley, claims that's what we're seeing in this video. 

I admit, I am definitely a skeptic, but watch for yourself and see what you think. This video was taken last August while someone was setting up to film the solar eclipse.

The video, posted by UFO Casebook on YouTube, explains the encounter as follows:

At first I thought it was the reflection of the sun off my camera lens and I was seeing a smaller sun but I decided to experiment a little to make sure so I took 9 videos in short breaks between to see if the object would move and it did! At first I thought it was the Moon that I caught on video.

I was using my Z740 Cell-phone Camera with a number 12 welding glass plate for welding to record the eclipse with.

Clip number 4 I rotated the camera 90 degrees and the object was not a reflection or it would have moved! [Source]