Well I THINK they are Merlins. The one I usually see is blue and brown and some other colors. I'm not sure where they nest, I just see them whenever I pass a certain stretch of the road about 200 yards from my house. I looked up pictures of Kestrels and Merlins and I think they look more like the Merlin. I also see what looks more like the Kestrels down the road south of here.