The great Maui rail or great Maui crake (Porzana severnsi) is an extinct bird species from Maui, one of two flightless rails which survived on Maui until people arrived in 150 C.E. It was the larger of two species of rail found on the island of Maui, Hawaii. Several specimens of this bird were found in early settlements. It was 1 foot 3 inches (38 cm) tall. Its beak was 0.75 inches (2 cm) inch long; its neck was 8.5 inches (22 cm) inches long. It was probably brown and grey and black like its recently extinct relatives the Hawaiian rail and Laysan rail. It was flightless due to its small wings that were on average less than 4 inches long.