Seemed a bit sturdy to be a downy, but not positive.
High in tree (circled): picking away at Green Ash trees laden with Emerald Ash Borer larvae.
My ID is educated guess, but I'm not enough of a birder to rule out Downy Woodpecker
The woodpeckers, piculets, wrynecks, and sapsuckers are a family, Picidae, of near-passerine birds. Members of this family are found worldwide, except for Australia, New Guinea, New Zealand, Madagascar, and the extreme polar regions. Most species live in forests or woodland habitats, although a few species are known to live in treeless areas, such as rocky hillsides and deserts.