Porphyrio is the swamphen genus of birds in the rail family. It includes some smaller species which are usually called `purple gallinules`, and which are sometimes separated as genus Porphyrula or united with the gallinules proper (or `moorhens`) in Gallinula. There are two living species of swamphen, the majority of the group having become ex... Found on http://en.wikipedia.org/wiki/Swamphen
any of several large Old World gallinules varying from purple to white, all possibly belonging to the single species Porphyrio porphyrio. Found on https://www.infoplease.com/dictionary/swamphen