In the Travellers of Mac'Greer series, which takes place in the real world, there exists gangs of Barn Owls who believe in the ideology of the Pure Ones. Outsiders refer to these owls as neo-tytos. The movment started in Britain, spreading to neighbouring Europe and America.

While these gangs are usually nomads who fight rivals, in certain parts of Britain and the United States the gangs are on friendly terms with each other, forming Unions.