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White-headed Steamer Duck

From Opus

Alternative name: Chubut Steamer Duck

Photo by agustineChubut, Argentina
Photo by agustine
Chubut, Argentina
Tachyeres leucocephalus


[edit] Identification

61-74 cm (24-29 in). A flightless duck.

[edit] Male

  • White head contrasting with rest of plumage
  • Bright yellow-orange bill (duller in moult) with black nail
  • Greyish body with white belly
  • Yellow-orange legs and feet

[edit] Female

  • Browner head and neck
  • Line behind the eye extending to foreneck
  • Greenish-yellow bill

Juveniles are similar to females.

[edit] Similar species

Flying Steamer Duck is very similar. White-headed is heavier-necked, shorter-winged, shorter-tailed and stouter-billed. The female has a more prominent postocular streak.

[edit] Distribution

Southern coast of Chubut Province, southern Argentina.
Common in its small range.

[edit] Taxonomy

This is a monotypic species.

[edit] Habitat

Found at rocky coasts and sheltered bays, entirely coastal.
Breeds on peninsulas and offshore islands.

[edit] Behaviour

An essentially flightless species.

[edit] Diet

Feeds on marine molluscs and crustaceans.
Forages by diving, also seen upending and dabbling. Does sometimes search the shoreline for food.

[edit] Breeding

Breeding season from October to February. The nest is a in a shallow depression lined out with sticks, grass and high-tide litter. It's hidden under bushes, close to the water. Usually in single pairs but also in rather large, dense colonies on offshore islands. Lays 5 to 6 eggs.

[edit] Movements

A sedentary species with some small-scale movements outside breeding season.

[edit] References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2017. The eBird/Clements checklist of birds of the world: v2017, with updates to August 2017. Downloaded from
  2. Handbook of the Birds of the World Alive (retrieved May 2016)

[edit] External Links


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