Winked at by a Raven (possibly)

On my way home from the co op I called in at Falcondale Lake. A pair of Willow Tits were in the scrubby area between the lake and the main road. Higher up the lane and higher up the slope there was a pair of Marsh Tits, one of which was carrying food, perhaps to a nest. A Crossbill flew over. A man was fishing. About 50m from him a Raven was very quietly rummaging through his sandwich/bait box. I looked at the Raven. The Raven looked at me. I carried on walking and didn't let on.