The Chiloé wigeon, also known as the southern wigeon, is one of three extant species of wigeon in the genus Mareca of the dabbling duck subfamily. This bird is indigenous to the southern part of South America, including the Chiloé Archipelago, from which it gets its name. In its native range, it is called the pato overo or pato real, although the latter name also refers to the Muscovy in the wild. Its specific epithet, sibilatrix, means 'whistler', referring to the bird's call.
Region
Southern South America
Typical Environment
Breeds primarily in southern Chile and southern Argentina, including areas near the Chiloé Archipelago and Patagonia. In the non-breeding season many birds move north into central Chile and northern Argentina, and some reach Uruguay, Paraguay, and southern Brazil. It favors shallow freshwater lakes, slow rivers, marshes, and brackish lagoons, and will also forage on adjacent pastures and flooded grasslands. Occasional use of coastal estuaries and sheltered bays occurs outside the breeding season.
Altitude Range
Sea level to 1500 m
Climate Zone
Temperate
Ease of Keeping
Beginner friendly: 3/5
Also called the southern wigeon, this striking dabbling duck is native to southern South America and named for the Chiloé Archipelago. Its specific epithet, sibilatrix, means 'whistler' and refers to the male’s clear, piping call. It often grazes on land like a small goose and readily forms pairs; in captivity it may hybridize with other wigeon species.
A male
Swimming Chiloé wigeon
A family in Patagonia, Chile
Searching for food
Mareca sibilatrix - MHNT
Temperament
social and active
Flight Pattern
strong flier with rapid wingbeats
Social Behavior
Often forms small to large flocks outside the breeding season and readily mixes with other dabbling ducks. Pairs form during or before the breeding season; nests are on the ground near water, lined with down and concealed in vegetation. Both parents may attend the brood, and family groups stay together while feeding.
Migratory Pattern
Seasonal migrant
Song Description
The male gives clear, whistling notes and piping calls that carry over water. Females produce a lower, raspier quack. Vocalizations increase during courtship and when maintaining contact within flocks.
