Ferruginous Duck

Aythya nyroca

© 2025
Share   
0 recent observations

Brief #

Male overall dark chestnut contrasting with pure white undertail coverts.

Synonyms #

  • Porrón pardo (Spanish)
  • Pato castaño (Galician)

Red List Status #

The Ferruginous Duck is close to being at high risk of extinction in the near future.
Find out more about IUCN's Red List program here

Description #

The breeding male is a rich, dark chestnut on the head, breast and flanks with contrasting pure white undertail coverts. In flight the white belly and underwing patch are visible. The females are duller and browner than the males. The male has a yellow eye and the females have a dark eye.

Measurements #

Length: 38 - 42 cm
Wingspan: 63 - 67 cm
Weight: 450 - 700 g