Photo by Michael Kulakofsky
Cooper's hawks are agile forest hawks. They feed mostly on smaller birds. The curved tail is a good way to tell a Cooper's Hawk from a Sharp-shinned Hawk. The Cooper's Hawk has a tail that is longer in proportion to the wings than does the Sharp-shinned Hawk. You will also see that the tail has a deeply curved tail while the Sharp-shinned Hawk's tail seems to be squared off.
