Carrion Crow feeding behaviour at Wymondham, Norfolk 4 October 2015

During an evening break from work in Wymondham, I parked in an empty car park for a coffee.  After a short while I could hear a crack sound, this was repeated on two or three occasion.  I investigated the source of this sound and saw a Carrion Crow on the ground pecking at a small object.  The Crow then took the object between its mandibles and flew up to about twenty feet or so and dropped what was undoubtedly a nut.  A second Carrion Crow flew into the car park carrying a nut in its bill, it landed on the ground but soon flew up to a height of about fifteen to twenty feet and dropped the nut onto the hard ground below in order to try and crack the nut.  The Crow flew down to the nut, it was at this time that I noticed the other Carrion Crow had been succesful in opeing the nut and was feeding.  Very intelligent birds.