First look for opposite branching. All of the limbs start as half of van opposite set, however most of them, one gets broken off, so to check you need to use binoculars and look at the upper limbs or the outer sections on any limb to verify if it has opposite branching. Then to know if it is a sugar maple or black maple you need to see a bud that can be seen but not yet opened, a sugar maple and black maples have buds that come to a point, reds and silvers have buds that have a flat top. The bark on a sugar maple starts when young almost like it has a pebble finish, as it matures the bark starts to have plates that peal away vertically. Also, on a sugar maple limbs coming off the trunk have a fairly large swell at the base of the limb, likely more than many other trees.
Once You've identified them for a couple of years you will be able to identify them from a distance in the winter.
Red maples have a fairly rough bark, almost similar to a black cherry but not as pronounced. One thing that can help also is to know what type of ground they like to live in, sugars do not like their toes in water, reds and silvers can grow in wetter areas, often on a little rise like a small island in areas that are seasonally wet but not under water most of the year.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.