A couple of days before Christmas I caught this cooper's hawk with a fresh kill, in my backyard. I grabbed the Olympus OM-D E-M1 with the 14-150mm zoom, which has a 300mm equivalent telephoto focal length. Even though the hawk was only about 30 feet away, that still wasn't long enough. Luckily, I also have the Olympus 70-300mm, which is a 600mm equivalent on the long end. It worked great. I was able to shoot from my deck without disturbing the bird and took nearly 100 pictures.