Rose, I want to say that the grandchildren of Sumo (which was a sprint-middle distance pigeon) have proven that they cross the channel after a whole day of flying (1st int. and 2nd Int. Dax, clocked on the day of release). In 2005 Jos Thoné makes the 1,2, 28th Int. Narbonne Narbonne with three grandchildren of Sumo. It was a race of more then 850 km and the pigeon were clocked at about 19.00 in the evening.