Sandhill cranes have been tried as foster parents for whooping cranes in reintroduction schemes. Native fauna are the first genera proposed for reintroduction. Collections are often held and cultivated with the intention of reintroduction to their original habitats. This is the first successful reintroduction of a wild mammal in the United Kingdom. There are a variety of approaches to species reintroduction. The last Arabian oryx in the wild prior to reintroduction were reported in 1972. Opponents fear the loss of livestock that may result from their reintroduction. The 19th century saw the gradual reintroduction of Shakespeare's text to displace Tate's version. He has publicly supported a reintroduction of the Equal Rights Amendment. The law also called for a gradual reintroduction of the Perso-Arabic alphabet. As a result, recommendations for protection of the reintroduction population were put forward. The technical regulations will allow for the reintroduction of ground effect. Perez helped lead the reintroduction of a similar bill in 2007. Many factors can attribute to the success or failure of a reintroduction. The latter areas are thus constantly at risk of reintroduction of the disease.