So I was outside having a smoke when I cought a bit of reflicted lite. Like you might see off of an airplane. I watch the sky every day so I have become very good at picking out the real from not real. If you wanna look at it like that. Plane or not plane. As I continued to focus on this tiny bit of light more and more began moving around one another like a flock of birds. Some would break off and do a sharp movement in any direction then back to the group. They were headed directly overhead in a west by north west direction from Aroura to Denver. Then out of my line of sight. Not like they vanished still in broad daylight just out of my view. I was extatic! I am still not positive on the total of craft I believe no less than 30 that I could group up but no more than 50. This was my first real life encounter with this style craft. However I had see hundreds in a report not to long ago from Mexico. Mexican military were folowing in jets hundreds of these smaller craft that moved in the same way. I was the only one there at the time which sucks. However it was broad day light any I will never not believe what I saw. No photos.