How does the owner notify in writing to raise poultry on the roof?

Dear Owner: The rooftop on the top floor belongs to the public space of the community, and no owner may occupy it. Recently, it was found that individual owners kept poultry on the top floor, which seriously violated the property management regulations. Owners are now required to move poultry out of the roof within three days. If the poultry is not treated within the time limit, the rooftop will be cleaned by the property.