Protection of Birds. § 3. No person shall throw from his hand any fragment of stone, wood, metal or other missile capable of inflicting injury, in any street, alley, walk or park of the city of St. Louis, or use or have in his possession ready for use in any street, alley, walk or park of the city of St. Louis, any sling, cross bow and arrow, air gun or other contrivance for ejecting, discharging or throwing any fragment, bolt, arrow, pellet, or other missile of stone, metal, wood or other substance capable of inflicting injury or annoyance.