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[Creeperopolis]

The Mauritius sheldgoose (Alopochen mauritiana), also known as the Mauritius shelduck, is an extinct species of sheldgoose that was endemic to the island of Mauritius. While geese were mentioned by visitors to Mauritius in the 17th century, few details were provided by these accounts. In 1893, a carpometacarpus wing-bone and a pelvis from the Mare aux Songes swamp were used to name a new species of comb duck, Sarcidiornis mauritianus. These bones were connected to the contemporary accounts of geese and later determined to belong to a species related to the Egyptian goose, and placed in the sheldgoose genus Alopochen. The Mauritius and Réunion sheldgoose may have descended from Egyptian geese that colonised the Mascarene islands.

One contemporary account states that the Mauritius sheldgoose had wings that were half black and half white, and that they were not very large. It may also be depicted in one illustration. Fossil elements show that it was smaller than the Egyptian goose, but with more robust legs. Little is known about the habits of the Mauritius sheldgoose, accounts indicate they were very tame, were grazers, lived in groups, and usually stayed on the north side of the island except for during the dry season when they were forced to the other side to drink. Their robust legs indicates they were becoming more terrestrial, which is supported by accounts stating they avoided water. The species was considered highly palatable by travellers, and while abundant in 1681, it declined quickly thereafter, being declared extinct in 1698. It was probably driven to extinction due to overhunting and predation by introduced animals, particularly cats.