I was sitting down to write this morning, when I heard a chittering. The sound was loud and, even with the window between its source and me, disconcertingly wild. I stood up from my chair to peer over the window sill at the same time something large-ish and feathered hopped up into the lower branches of the tree outside. Reflexively, I took a step back. We have lived in New Mexico for 11 years now but I cannot pretend to be jaded about roadrunners. A Southern girl, my only exposure to the animal had been Warner Bros. cartoons until Scott came back from a job interview here in the desert, a witness to their real-world existence. “A roadrunner ran in front of our car!”…