The bark holes pictured look like those created by Yellow-bellied Sapsucker woodpeckers, a native bird that usually doesn't cause any serious or long-lasting damage. They are only around in the winter, migrating further north (or into our western MD mountains) to breed for the summer. Sapsuckers can create two different shapes of holes in a variety of tree species, and the holes become less prominent as the tree ages (assuming it remains in decent health and doesn't have an overlapping problem).

What is causing the other symptoms is harder to determine from photos and description, so we recommend that the tree be evaluated by a certified arborist or licensed tree expert. They can't treat or cure every condition, but can help narrow-down a diagnosis and look for sources of tree stress (for example, girdling roots) that might be able to be alleviated. Tree ID is very important for determining what pests, diseases, and sources of environmental stress are likely to be affecting it. That leaf shape suggests either Sugar Maple (native) or Norway Maple (invasive, but unfortunately it was commonly grown), and both species can struggle in our hot summers as they prefer cooler climates, especially in times of drought.

We can't see what aspects of the bark look "unhealthy," but trees often have one or more types of lichen on the trunk and branches, which is natural and harmless. Sometimes there can be dark patches due to sooty mold, a common fungus that does not cause infections but which grows on sugar sources like oozing sap or honeydew from certain insects (not all of which are serious tree pests). As any honeydew residue weathers off (which would happen faster if we actually got more rain), so will the sooty mold over time. The linked pages have more information.

Miri