Pigs don’t fly yet, but rhinos do.

Six black rhinoceroses were flown from South Africa to Zakouma National Park in Chad last week, reuniting the threatened animal with a land it has not roamed in nearly five decades.

Chad is one of several African countries that have recently sought to start their own small black rhino populations in an attempt to protect the species from extinction. It is a participant in the African Rhino Conservation Plan, which hopes to significantly grow the number of rhinos in Africa over the next five years.