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Mariana Mallard

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description Mariana Mallard Overview

The Mariana mallard, Anas oustaleti, was a duck endemic to the Mariana Archipelago, where it was documented on Guam, Tinian, and Saipan. The population declined in connection with hunting and the loss of wetland habitat, and the U.S. Fish and Wildlife Service recorded no confirmed sightings after 1979. The species was federally listed as endangered in 1977 and later removed from the U.S.

list because available evidence indicated that it was extinct.

help Mariana Mallard FAQ

What is the scientific name of the Mariana mallard?

The Mariana mallard is Anas oustaleti, also called Oustalet’s duck. It was an extinct duck endemic to the Mariana Islands. [U.S. Fish and Wildlife Service](https://www.fws.gov/policy/library/2002/02fr3675.html)

Which islands did the Mariana mallard inhabit?

Historical records place it on Guam, Saipan, and Tinian in the Mariana Archipelago. Its habitat included the islands’ limited freshwater marshes, swamps, and wetland vegetation. [U.S. Fish and Wildlife Service](https://www.fws.gov/policy/library/2002/02fr3675.html)

When was the Mariana mallard last confirmed in the wild?

The last confirmed sighting occurred in 1979, when Eugene Kridler found fewer than a dozen birds on Saipan. Captive-breeding attempts failed, and the last known bird died at SeaWorld San Diego in 1981. [U.S. Fish and Wildlife Service](https://www.fws.gov/policy/library/2002/02fr3675.html)

Why did the Mariana mallard become extinct?

Habitat loss and hunting were major causes, while the species was also limited by the small amount of suitable freshwater habitat in the islands. The largest historical count mentioned in federal records was only two flocks of roughly 50 to 60 birds at Lake Hagoi on Tinian. [U.S. Fish and Wildlife Service](https://www.fws.gov/policy/library/2002/02fr3675.html)

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