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Harlequin Duck

Histrionicus histrionicus

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About Harlequin Duck

Solitary animal, only coming together to breedTerritorial, defending its territory against other Harlequin DucksCarnivorous, eating a variety of aquatic insects, crustaceans, and mollusksMigrates between breeding and wintering grounds

Size

35 - 40 cm

Weight

560 - 900 g

Lifespan

up to 10-15 years

Diet

Carnivorous, eating a variety of aquatic insects, crustaceans, and mollusks

Conservation Status

Status

Vulnerable

Population Trend

declining

Threats

  • Habitat loss and degradation
  • Hydroelectric dam construction
  • Climate change

Additional Notes

The Harlequin Duck is a declining species due to habitat loss and degradation, hydroelectric dam construction, and climate change.

Distribution

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Western North America

North America • United States, Canada

Eastern Asia

Asia • China, Japan, Russia

The Harlequin Duck is found in fast-flowing rivers and streams in North America and eastern Asia, breeding in areas with rocky substrates and strong currents.