Driving along country highways I often notice scenes like this:
There are miles and miles of these views – pastures lined with trees, gathering spots for cows to pass the days away.
But look closer:
Now do you notice the way the tree limbs end in a straight line? There are several different varieties and ages of trees, but their lower limbs all end along the same horizontal plane.
Look closer still:
I couldn’t help but wonder what caused this phenomenon, not just in this field, but in dozens of pastures along my route.
So I thought and I pondered, and here’s my theory: the cows nibble the leaves as high as they can. And where they can reach no farther, well, that’s the line we see along the trees.
Any other ideas?