This evening just before sunset, my wife looked out of the kitchen window, and behold: a big black, nasty old crow entering our CDTs burrow. My first reaction was "where's my shotgun" (oops . . . I don't have a gun). I dashed out into the tortoise yard and THAT crow flew off. I've never wittnesed this before, but do these crows pose a threat? The burrow is roughly 7ft long by 3 and a half ft deep. I couldn't see any of the tortoises, but I know that at times they rest near the entrance. Could a crow pose a threat? Will this aforementioned big, black, nasty old crow be back? I know that there are plenty of crows in the Mojave Desert where CDTs are from . . . what hazard do they present adult tortoises? I know that they eat young tortoises, but will then be a threat to my adults? Should I purchase a shotgun? Geesh. . . I'm ticked!!