Some Sort of Crow Omen?

My husband was walking to the store early this morning, when suddenly a crow dropped a large piece of ice at my husbands feet, flew to the power lines and perched himself there to quietly observe the rest of my husbands journey to the store and his return to our front porch. Coincidentally, it was the same chunk of ice my husband had slipped on just a few minutes before (where of course he fell again half a dozen times before the arrival of our crow friend...) From there he quietly urged me to the sidewalk where the mysterious creature was still watching us silently. As we retreated inside away from the cold of the morning, the great bird let out a loud 'caw' and flew away. I thought it was quite amusing that a crow should take a piece of ice in his possession and purposely set it in front of my husbands feet. The crows are known to be a bit mischievous, but is this also perhaps an omen of some sort?