The prey is caught

As I was walking back to the hall of residence, I noticed a crow (probably the youngster who made a forced landing rather close to me the other day) chasing an empty Sainsbury's carrier bag that was drifting along in a slight breeze. He eventually caught it and stomped all over it, looking up occasionally as if to say "It's mine, it's mine! Aren't I clever, Mum?" I couldn't see the parentals but they were doubtless watching from a nearby tree. I was a bit concerned that he might try to get inside and get into a tangle, but he eventually got bored with it and hopped away.