He's definitely not a red-tailed hawk. Possibly a red-shoulder hawk. Red-shoulder hawks have the stripped tails like the one in your pictures. Red-tailed hawks have red tails. There are other hawks with stripped tails too though.

Here's a couple pictures of a red-shoulder hawk that hangs around my yard. Is this what your guy looked like? http://www.flickr.com/photos/kblaix/...7608765169048/ http://www.flickr.com/photos/kblaix/...7608765169048/