Strange Circles in Map

Hi all,

I recently created my first map and I’m confused about some strange circles that showed up when looking at the Plant Health NDVI map. My initial thought was that the Drone Deploy stitching software may have created them, but certainly haven’t ruled out the fact that maybe there is something about the ground in that area that made the circles appear. The only thing I know about the land is that it is publicly owned state ground. Any ideas?

Map with circles

Do you have an RGB photo of the same area we can compare?