4 circular lights in early afternoon.

There have been a lot of birds in the sky today feeding on the palm trees in my yard so I've been looking up a lot.
I saw four circling- what I believed to be Birds initially -flying super high in the sky- much higher than I've seen birds fly and they were curious to me as they were white.
As I looked at them, they seemed to start reflecting light-brightly. My "white birds" seemed to have silver underbellies.  They were moving circularly initially and then broke into a Southeast Direction and as they got closer to me I could see that they were dispersing the air circularly around them. It was very faint but our air is totally dirty today and  cloudless. The air dispersment was visible through their entire movement South East.  The closer they got to me it became clear that they were not reflecting light as much as they were pulsing out a light.
Their Southeast motion was like a regular flight-i mean to say they weren't circling.