Brazilian Merganser
NameBrazilian Merganser
Common NameBrazilian Merganser
Scientific NameMergus octosetaceus
FamilyAnatidae
Wingspan (cm)62.5
Length (cm)52.5
Weight (g)650
Plumage DetailsAdults have a dark grey body, a darker head and neck with a prominent shaggy crest. The back is dark, and the flanks are finely barred grey. A white speculum (wing patch) is visible on the secondary flight feathers, especially in flight. The bill is slender and serrated, and the legs and feet are reddish.
Vocalization / CallGenerally a very silent bird. When vocalizing, it produces soft, low-pitched croaks or growls, particularly during courtship or when disturbed.
Primary Dietpiscivore
Primary Habitatsforest, wetland
Conservation Statuscritically-endangered
Geographic RangeHistorically found in central-south Brazil, eastern Paraguay, and northeastern Argentina. Its current range is severely restricted to a few isolated populations in Brazil, primarily in the Serra da Canastra National Park and Chapada dos Veadeiros National Park.
Identifying FeaturesShaggy crest on head, Dark grey plumage, Slender, serrated bill, Reddish legs and feet, White speculum on wing (visible in flight or at rest)
Description
The Brazilian Merganser is a critically endangered diving duck characterized by its dark plumage and distinctive shaggy crest. It inhabits clear, fast-flowing rivers and streams, where it actively hunts fish and aquatic invertebrates.
