The endangered Laysan duck is considered the rarest native waterfowl in the United States. Each species account is written by leading ornithologists and provides detailed information on bird distribution, migration, habitat, diet, sounds, behavior, breeding, current population status, and conservation. They once were widespread across the Hawaiian Islands, but by 1860, they ceased to exist anywhere except Laysan Island, part of the Hawaiian Islands National Wildlife Refuge. A second shipwreck party washed ashore in 1846. Reproductive success is sometimes related to brine fly (prey abundance) densities which, in turn, are reduced by … The Laysan Duck, … The Laysan duck was extirpated from Lisianski some time between 1845 and 1857. As part of an effort to ensure recovery of this endangered species, 42 wild ducks made a 750-mile Pacific voyage from Laysan to … The Laysan Duck is nocturnal and terrestrial.

The Laysan Duck has a very small population, endemic only to the island of Laysan in the Hawaiian Islands. (Browse An extensive multimedia section displays the latest photos, videos and audio selections from the Macaulay Library. DISTRIBUTION: The Laysan duck currently occurs only on Laysan Island, Midway Atoll, and Kure Atoll in the NWHI; the population on Midway Atoll was a result of … High incidence of duckling trauma suggests these freshwater seeps may become overcrowded. Some of the most unusual and taxonomically puzzling taxa of dabbling ducks are endemic to remote oceanic islands. By 1857 mice had denuded the island, destroying the duck's habitat. The ducks prefer dense vegetation near water and they use all the available habitats on Laysan Island and Midway atoll, including the upland vegetation, the wetlands, fresh water streams, the mud flats, the lake and the coastal areas. On Laysan Island, brood rearing habitat is probably an important limiting factor. The Laysan Duck, endemic to the Hawaiian Islands, has within historic times been restricted to tiny, remote Laysan Island near the northwestern end of the archipelago. Unencumbered by vegetation, windblown sand filled in the island's freshwater springs. Freshwater seeps with high invertebrate abundance and adjacent dense vegetative cover are used as duckling nurseries. This bird prefers ecological systems such as Subtropical or Tropical Dry Shrublands and Coastal Marine areas such as salt lagoons and marine lakes. Ensuring the long-term viability of the Laysan duck depends upon (1) maintaining the source population and its habitat on Laysan Island, (2) maintaining the new population at Midway and improving habitat there, and (3) establishing the species on additional islands. By 1916 the mouse and rabbit population starved to death due to lack of vegetation [1]. The population of the bird has fluctuated wildly in recent years, and was last estimated to be only about 700 to 800 birds in 2007. They seek cover in hot weather and will forage in the cooler night temperatures.


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