I had an interaction with a raven in California that made me sure it has seen the Weeping Angels from Doctor Who. I was sitting on the ground, and it was behind me. It clearly wanted a bit of the sandwich I was eating, but it didn't move a muscle. Every time I turned around, it continued to be dead still, but was just a little closer to me. When it was finally about a foot away from me and just as statuesque as ever, I told it to buzz off because I wasn't going to feed it. It seemed to have understood and just walked away slowly, looking back at me occasionally with a hurt look in its eyes.