I did see more than one of them (two for joy), but a particular magpie caught my attention today.
I was waiting for the lights to change at a massive roundabout. The magpie swooped down to the driver's side lane and looked along the grassy inside edge of the roundabout. Then I saw it take off, with a red carton almost the same size as its body in its beak.
French fries. It was obviously urban, knew where to look and had decided to go for a take-away meal.