I agree with Bob and a nicely captured image.
Yes, but a sad situation - likely stunned after hitting a large plate glass window, and could be injured internally. A Swainson's wouldn't normally be sitting on a town street.
I agree that it is not a fledgling.
I don't think it is a Red-tailed Hawk. Look how long its left wing is. The left wing tip is bent by the hard carpeting. And its under-tail is pure white. A perched Red-tailed Hawk's wing length is shorter than its tail and a perched Swainson's wing tips are longer than its tail.
Also there is no coherent patterning on its belly that could be described as a "belly band." Even the south Texas, B. j. fuertesi, Fuertes Red-tailed Hawks with their very sparse abdominal markings show a distinct "belly band."
Bob
Too early to be a 2017 fledgeling of any hawk, I think - their young take quite a long time to develop and fledge, and I think even in 'subtropical' Texas wouldn't be fledging before June (where I am, Buteo young fledge in late July or August).
Looked again at the pics though, and I don't think it is Swainson's, I'd say an immature pale morph Red-tailed Hawk, probably a last year's fledgeling (hatched 2016). The plumage pattern of streaks on the lower flanks fits that much better. But it's a long time since I saw any of these, so wait and see what others say.
Thanks; I'm not sure on all those points, though - I've done a blow-up of the pic (below) with left wing primary tips highlighted green, and the one tail feather visible (barred, with whitish tip) highlighted red, and the tail is longer. Additionally, if stunned or injured, the bird may well have its wings hanging lower than normal. The dark spots on the feathers across the belly are what I saw as a "belly band", while conversely, I'm not seeing any dark upper chest band as [most?] Swainson's would show.
For a somewhat similar (though less orangey-breasted) bird, see e.g. this link (Red-tail, Illinois).
No, that's just a fold in the skin :t:Does it look like there is a ring around the bird's left "ankle?"