Yes Virginia, coyotes really do chase roadrunners.
From Twitter (you don’t have to join):

And here’s another roadrunner vs coyote encounter, also from Tucson.
Note the tail action.

If no film or link appears in this email, go to the blog to view it by clicking on the blog title above. If the film stops & starts in an annoying manner, press pause (lower left double bars ||) to let it buffer and get ahead of you.   [Chuck Almdale]