It is declared to be unlawful for any persons to molest or interfere with, in any way, the peaceful occupancy of the Monarch Butterflies during the entire time they remain within the San Leandro Marina, Tony Lema Golf Course and Marina Golf Course of the City of San Leandro, in whatever spot therein they may choose to stop, provided, however, that if said butterflies should at any time swarm in, upon, or near the private dwelling house or other buildings of a citizen of the City of San Leandro in such a way as to interfere with the occupancy and use of said dwelling or other buildings, that said butterflies may be removed, if possible, to another location upon the application of said citizen to the City Manager.