Aphanapteryx Bonasia. The red rail (Aphanapteryx bonasia) is an extinct species of flightless rail. It was endemic to the Mascarene island of Mauritius, east of Madagascar in the Indian Ocean. It had a close relative on Rodrigues island, the likewise extinct Rodrigues rail (Erythromachus leguati), with which it is sometimes considered congeneric. Its relationship with other rails is unclear. Rails often evolve flightlessness when adapting to isolated islands, free of mammalian predators. Illustrated page from "Extinct Birds" by Lionel Rothschild, published in 1907, and drawn by John Gerrard Keulemans (1842–1912).