Mergus octosetaceus •
mergus octosetaceus

Mergus octosetaceus

Mergus octosetaceus NatureServe Explorer Species Reports — NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports — Mergus octosetaceus ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library — The U.S. Fish and Wildlife Service’s National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video. The Brazilian merganser (Mergus octosetaceus) is a South American diving duck in the Mergus genus. It is one of the six most threatened waterfowl in the world, with possibly fewer than 250 birds in the wild and a few kept in captivity in Brazil. The origin of its name is from its long, sharp-edged beak that has a great number of teeth-looking edges.  This merganser is a dark, slender duck with a shiny dark-green hood with a long crest, which is usually shorter and more worn-looking in females. Upperparts are dark grey while the breast is light grey, getting paler toward the whitish belly, and a white wing patch is particularly noticeable in flight. It has a long thin jagged black bill with red feet and legs. Although females are smaller with a shorter bill and crest, both sexes are alike in color. The slender ducks range in size from 49 centimeters to 56 centimeters as an adult. Young Brazilian mergansers are mainly black with white throat and breast.

Detailed information
Full Name: Brazillian merganser (Mergus octosetaceus)
Where found: Wherever found
Critical Habitat:N/A
Species Group:Birds
Current listing status
Status Date Listed Lead Region Where Listed
Endangered 01/27/2011 Foreign (Headquarters) Wherever found
  • Countries in which the the Brazillian merganser, Wherever found is known to occur: Brazil
Federal register documents
Citation Page
12/28/2010 75 FR 81794 81815 Listing Seven Brazilian Bird Species as Endangered Throughout Their Range; Final Rule
08/12/2009 74 FR 40650 40683 Listing Seven Brazilian Bird Species as Endangered Throughout Their Range; Proposed Rule
12/16/1991 56 FR 65207 65208 ETWP; Finding on Petition and Initiation of Status Review of 53 Foreign Birds; 56 FR 65207 65208
No recovery information is available for the Brazillian merganser.
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