Hard maples are premium timber, so I assume you have soft maples.
Nope, sugar maples. A few very nice 30"+ diameter trees. Lots in the 12-18". But hundreds and hundreds in the 4"<
I've always head sugar maples are the end of the line for a hardwood forest evolution. They will eventually take over the oaks and hickories. Leafing out a bit earlier, and providing so much shade. However they produce no nut crop for wildlife. So that a hard maple forest will be game free, as far as deer are concerned.