In the 1920s, it used to advertise for free "Le Crapouillot", another satirical magazine created by Jean Galtier-Boissière, a friend of Maurice Maréchal. Similarly, "Le Crapouillot" carried free advertisements for the "Canard". Relations between the two magazines soured during the Spanish Civil War as Maréchal supported the Spanish Republican government of Madrid, whilst Galtier-Boissière remained strictly pacifist. The "Canard" and its format served as an inspiration for the satirical weekly magazine "El Be Negre", published in Barcelona between 1931 and 1936.