The Downy Woodpecker is a very busy, active little bird. It moves quickly from spot to spot, pecking at trees looking for small insects. This female was doing just that recently in Adams County, Colorado.
I find these birds are much easier to hear than to see as they don’t sit still for long and tend to hang out in areas that are quite wooded. Thankfully this one gave me a few nice pictures, like this one, where she was hanging almost upside down pecking at a tree.
Female Downy Woodpeckers are all black and white while the males will have a small red tuft on the top of their heads. These birds are common across much of North America so you most likely have some not far from you.