Great spotted woodpecker

I was outside with my camera and my macro lens when I heard this woodpecker at the top of a tree outside our neighbours garden. I took a couple of shots (with the macro lens) and ran indoors to change the lens. When I came out the woodpecker was still there so I zoomed in and the camera WOULD NOT FOCUS! Then along came a magpie and chased the woodpecker off. As you can imagine, this has been massively cropped and is not very sharp but at least it shows that it is a woodpecker!