Do you see what I saw?

I took this photo earlier this week while walking along one of the trails I visit for quick outings.  On the right is a farm field presently being cultivated for its annual corn planting.  On the left is a field that is undisturbed, with grasses and wildflowers and brush.  Straight ahead leads to some ponds and woods.

I've walked this dozens of times, but this day there was something new and unusual...

Click to enlarge, or go to this post for the answer.