The Croses Pouplume (lousefeather) was an unusual ultralight aircraft developed in France in the 1960s. Inspired by Henri Mignet's Pou-du-Ciel design with its distinctive tandem wing layout Croses set out to develop a similar aircraft to be powered by a single-cylinder motorcycle engine of around 6 kW (8 hp). The resulting machine designated the EC-1 weighed only 108 kg (238 lb) empty and flew around 1960.
Made by Homebuilt aircraft.