Here is a quick explanation of what happens & why the leaves change:
The change in the leaves occurs as a survival mechanism for all trees as winter approaches. As daylight becomes less, a tree responds by pumping sugars and minerals into its trunk, limbs and leaves while at the same time getting rid of water in order to protect itself from busting open in freezing temps. Those sugars & minerals are pushed into the leaves which is why we see the leaves turn colors and why the deer love to eat them.
I think the sugar maples contains the highest concentration of sugars per cubic inch & therefore are the tastiest to the deer.
Hope that makes sense and helps explain why the deer like them so much.[ Post made via iPhone ]