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ferruginous duck
Aythya nyroca
Last update: 21 Feb 2026
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Ferruginous Duck Basic Information
| Scientific Name | Aythya nyroca |
|---|---|
| Status | NT Near Threatened |
| Size | 38-42 cm (15-17 inch) |
| Colors |
Chestnut
White
|
| Type |
Duck-like Birds
|
| Family | Ducks, Geese, Swans |
Ferruginous Duck Names In Other Languages
| assamese | ৰঙা বালিহাà¦à¦¹ |
|---|---|
| bengali | লালমà§à¦¡à¦¼à¦¿, বà§à¦¨à§‹ হাà¦à¦¸ |
| french | Fuligule nyroca |
| gujarati | કાટચણ, કથà«àª¥àªˆ બતક |
| hindi | लाल सिर à¤à¥à¤¤à¤¾à¤°à¥€, à¤à¥‚री बतà¥à¤¤à¤– |
| kannada | ಕೆಂಪೠಬಣà³à²£à²¦ ಬಾತà³à²•à³‹à²³à²¿ |
| malayalam | തവിടàµà´Ÿàµà´¤à´²à´¯àµ» താറാവàµ, ചെനàµà´¤à´¾à´±à´¾à´µàµ |
| marathi | लालसरी, तांबूस बदक |
| nepali | à¤à¥à¤¤à¤°à¥€, कालो टाउके हाà¤à¤¸ |
| portuguese | zarro-castanho |
| punjabi | لال سَر، Ú©Ùھنجا |
| spanish | Porrón pardo |
| tamil | செமà¯à®ªà®´à¯à®ªà¯à®ªà¯ வாதà¯à®¤à¯ |
| telugu | à°•à°°à±à°•à°¸ బాతà±, à°Žà°°à±à°° బాతౠ|
Introduction
The Ferruginous Duck (Aythya nyroca) is a distinctive medium-sized diving duck native to Eurasia. Known for its rich, rusty-brown plumage, it is a fascinating species for birdwatchers and nature enthusiasts alike.
Physical Appearance
Measuring between 38-42 cm, the Ferruginous Duck features a deep mahogany or 'ferruginous' color. Males are characterized by their striking white eyes and a bright white patch under the tail, which is a key identification feature. Females are slightly duller in color with darker eyes but maintain the same general profile.
Habitat
The primary habitat of the Ferruginous Duck consists of shallow freshwater lakes, marshes, and ponds. They prefer areas with abundant emergent vegetation and floating plants, which provide both food and concealment from predators.
Diet
These ducks are omnivorous and primarily obtain their food by diving. Their diet typically includes:
- Aquatic plants, seeds, and roots
- Mollusks and crustaceans
- Aquatic insects and their larvae
- Occasionally small fish and amphibians
Breeding and Nesting
Breeding usually occurs in late spring. They build their nests close to the water's edge, often hidden within dense reed beds or on floating mats of vegetation. A typical clutch consists of 7 to 10 cream-colored eggs, which are incubated solely by the female.
Behavior
The Ferruginous Duck is generally secretive and shy compared to other diving ducks. They are excellent divers and spend much of their time foraging underwater. While they can be found in small groups, they rarely form the massive flocks seen in other Aythya species.
Conservation Status - NT Near Threatened
The Ferruginous Duck is currently listed as Near Threatened on the IUCN Red List. The main threats to their population include habitat loss due to wetland drainage, water pollution, and human disturbance.
Interesting Facts
- The name 'ferruginous' comes from the Latin word 'ferrugo,' which means iron rust, describing the bird's color.
- Unlike many other diving ducks, they can take flight directly from the water with relative ease.
- Their white undertail coverts are so bright they can often be seen from a great distance, even when the rest of the bird is obscured.
Tips for Birdwatchers
To spot a Ferruginous Duck, visit reedy wetlands during the early morning. Use high-quality binoculars to look for the male's distinct white eye. They are often found in the company of other diving ducks, such as Tufted Ducks or Pochards, so check mixed flocks carefully.
Pro-Tip: To spot this bird in dense forest canopy, a 8x42 binoculars or telescope is highly recommended.
- [Check out our top recommended gear here]
Conclusion
The Ferruginous Duck is a beautiful and elusive species that serves as an indicator of healthy wetland ecosystems. Protecting their natural habitats is crucial for the survival of this unique and mahogany-colored waterfowl.
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