Rhea (bird) males of "R. americana" can reach tall at the head, at the back and can weigh up to , The lesser rhea is somewhat smaller as they are only tall at the back. Their wings are large for a flightless bird () and are spread while running, to act like sails. Unlike most birds, rheas have only three toes. Their tarsus has 18 to 22 horizontal plates on the front of it. They also store urine separately in an expansion of the cloaca. Rheas are from South America only and are limited within the continent to Argentina, Bolivia, Brazil, Chile,
Work Is a Four-Letter Word was a member of the Royal Shakespeare Company, of which Peter Hall was artistic director until the year of the film's release. Cilla Black had not previously had a starring role; she had appeared briefly as herself in "Ferry Cross The Mersey" (1965), a vehicle for Gerry and the Pacemakers. She recorded the theme song for the film, having the same title, which was released as the B side of "Where Is Tomorrow?" in 1968; the single reached number 39 in the UK Charts. This would be Black's only starring role in film. Most of the remainder of the cast