The ferruginous duck, also ferruginous pochard (Aythya nyroca) is a medium-sized diving duck from Eurasia. The scientific name is derived from Greek aithuia an unidentified seabird mentioned by authors including Hesychius and Aristotle, and nyrok, the Russian name for a duck.
Their breeding habitat is marshes and lakes with a metre or more water depth. These ducks breed in southern and eastern Europe and southern and western Asia. They are somewhat migratory, and winter farther south and into north Africa.
The adult male is a rich chestnut colour with a darker back and a yellow eye. The pure white undertail helps to distinguish this species from the somewhat similar tufted duck. The female is similar but duller, and with a dark eye.
These are gregarious birds, forming large flocks in winter, often mixed with other diving ducks, such as tufted ducks and common pochards. Hybrids between this species and the common pochard are sometimes referred to as "Paget's pochard".
These birds feed mainly by diving or dabbling. They eat aquatic plants with some molluscs, aquatic insects and small fish. They often feed at night, and will upend (dabble) for food as well as the more characteristic diving.
It is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies.
Egg, Collection Museum Wiesbaden
- BirdLife International (2012). "Aythya nyroca". IUCN Red List of Threatened Species. Version 2013.2. International Union for Conservation of Nature. Retrieved 26 November 2013.
- Jobling, James A (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. pp. 64, 277. ISBN 978-1-4081-2501-4.
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- Showler, D.A.; Davidson, P. (1999). "Observations of Jerdon's Babbler Chrysomma altirostre and Rufous-vented Prinia Prinia burnesii in Punjab and North-West Frontier Provinces, Pakistan" (PDF). Forktail 15: 66–76.
- Singh, A.P. (2002). "New and significant records from Dehra Dun valley, lower Garhwal Himalayas, India" (PDF). Forktail 18: 151–153.
- Vinicombe, K.E. (2000). "Identification of Ferruginous Duck and its status in Britain and Ireland" (PDF). British Birds 93 (1): 4–21.
- Vinicombe, K.E. (2007). "ID in depth – Ferruginous Duck". Birdwatch 176: 24–26.
|Wikimedia Commons has media related to Aythya nyroca.|
|Wikispecies has information related to: Aythya nyroca|
- BirdLife species factsheet for Aythya nyroca
- Aythya nyroca on Avibase
- Ferruginous duck videos, photos, and sounds at the Internet Bird Collection
- Ferruginous pochard photo gallery at VIREO (Drexel University)
- Interactive range map of Aythya nyroca at IUCN Red List maps
- Audio recordings of Ferruginous duck on Xeno-canto.
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