We had a hen late 80s early 90s who scored fae Rennes 3 year in a row her best position being 81st open but every year she came back she would sit on the house roof for 20-30 mins meaning she lost out in better positions. We couldn't understand her flying that distance and not trapping. Lost her the next year at Rennes she was 9 years old by this time and her first time over was when she was 6.