Honey, Keep the Cats Indoors

So, some bird of prey has taken up residence in my very urban neighborhood. I was driving down Osceola Street on my way to get some Sunday doughnuts, and this bird (which had been happily chewing on a squirrel) took off and roosted in a nearby sweetgum tree.

I'm unsure of the species - I'm relatively certain it's a juvenile red-tailed or Swainson's hawk, but if anyone can more accurately identify it, let me know.

Of course, the REAL qusetion is whether the bird is here to stay, or is just a property speculator, artificially inflating roost values.

Picture here:


And a few more pictures are available here:
http://shapu.deviantart.com