I'm creating a history/fantasy story containing carrier pigeons or other messenger birds.
Historically, as far as I understand it, certain people professionally trained and kept carrier pigeons or other messenger birds, and would charge a fee for the service of transporting messages. They were also used in war.
What is the title of the professional thus employed? Also, what would you call the business/service? (E.g. Bob's Avicultural Communiques)