Anomalous object photographed and not noticed until closer examination.I was taking a series of photos at Chiricahua National Monument, Arizona. I observed a black hawk circling around an area and decided it might make a good shot. I took the shot and carried on. It is only now, a month later, I was tidying and cropping a set of images from my travels and noticed an unusual anomaly in the photograph. The camera is a virtually new Nikon D70s with a 6.1 Mega Pixel CCD. There's nothing like this on any of the other photos I took.I don't know what it is and would like to offer it up for any suggestions.((ADDENDUM FROM WITNESS))Hello,I have subsequently discovered that this anomaly appears on some other photos I have examined and is probably a fault in the camera CCD or compression software.Please ignore my report as my own investigation seems to have solved it.Sorry for any inconvenience though it may shed light on any future similar images etc.Thanks,((name deleted))