Northern Mockingbird a'singin

Just a few miles south of Canon City, in the Breeding Bird Atlas that I am surveying, I found this singing Northern Mockingbird. I had heard several mockingbirds singing in this block but didn't see one until today.

Though both males and females sing, the Birds of North America online states that females rarely sing in the summer so this is most likely a male. And sing this one does, as shown the bottom pic.
SeEtta