GoKawiilOperation Migration ends costume-piloted whooping crane flights after 15 years
From 2001 to 2015, pilots in white hooded costumes flew open-cockpit ultralights to teach captive-raised whooping crane chicks a migration route between Wisconsin and Florida, since the species had lost its eastern migratory tradition. The method worked technically, successfully guiding birds that had never flown the route before, but the program was ultimately shut down.