I believe this is a red-tailed hawk taken with a 60D and 70-200 f/4 L USM with 1.4x II extender. The hawk was on a power line less than a mile from my house! 2013_08_11_4152_upd_8x10_tight by dthrog00, on Flickr
Thanks for viewing
Dave
Yes, correct identification. Beautiful image too, I love raptors. It's a common species around where I live but it's very uncommon that I can very close for a good image. Well done!