Joanne's interesting story is similar to what I have heard on more than one occasion regarding Greater Roadrunners spending the night atop security lights in farmyards in southeastern CO in winter. Pertaining to that roadrunner a few winters back on the Dinosaur Hogback near Red Rocks, Joe Roller, Joey Kellner, and I wondered out loud where that bird could be spending the night (and supplementing what appeared to be a rather sparse food supply on the hogback). One of our suspicions was the small farm down below with a barn and a few livestock just north of Red Rocks and west of the highway.
Finally, once during a winter birding adventure back in the 1970s my buddy Mike Schomaker and I spend the night in his VW Microbus in a campground near Falcon Dam in south TX. I vividly remember peering out the window at first light to see a roadrunner sitting atop our campsite's bbq grill, which must had had a few smoldering charcoal briquettes in it. The bird looked all the world like a chicken incubating said heat source.
Dave Leatherman
Fort Collins