I believe it was hit by a car, and just flittered and fluttered until it landed at my home. I found it at 4pm. In that time, I retrieved a shovel from my neighbors, called animal control, conferred with my wife, and walked it out to a field. By the time I was smart enough to call the conservation department, it was almost 5, and it was closing up shop. I would have to care for it at my home for a night.
Which is all fine, but they told me after they euthanized it that it was dehydrated, which I bet would have prohibited its chances at recovery, had they been able to work it through its physical trauma (which, by the way, who knows, maybe they couldn't have). Still, had I been smarter, and called conservation sooner, maybe it wouldn't have been as dehydrated -- or dehydrated at all, I don't know how long it takes a hawk to get dehydrated.