Besides burning up the concrete, he also likes to jump up onto the six-foot tall stone wall across the street from his home. He can make the leap in a single bound (I've witnessed him doing it), and then he’ll run along the top of the wall at breakneck speeds. One day, I was walking along the sidewalk near this very stone wall, when the roadrunner came flying along it from the opposite direction. He stopped when he got next to me, and we stared at each other for a full minute. He was so close that I could clearly see that he had a beard, little scruffy feathers sticking out from his chin, and a mustache (although that might have just been a snake hanging out of his beak). I’ve never been that close to a roadrunner before, and it was pretty awesome.
UPDATE: Apparently, there is not one, but two roadrunners living in that copse of trees. I saw them both today, kissing. At least, it looked like they were kissing. They were beak to beak. I suppose they could have been fighting or a having a very close conversation. I'm assuming that the second one is a girl, and I've name her "Roe," a play on "Road." Of course, I'll never know which one I'm actually seeing now.