Cooper's Hawk (Accipiter cooperii, ID by Philippe Cohen, similar to Sharp-shinned Hawk). This hawk flew right over my head, silently. Trail c, August 17, 2008 at 8:24 am. I was on Jasper Ridge looking for a good photo of the setting full moon. It was dark in the trees, before sunrise. 1/125 sec, f/5.6, handheld 200 mm lens, ISO 320.