Ferruginous Duck
Aythya nyroca
The Ferruginous Duck is a rare migrant to Britain, typically seen in the summer months, and is most likely to be spotted in wetland areas, particularly in the eastern and southern regions. It is a medium-sized diving duck that is native to the Palearctic region, making it a sought-after sighting for British birdwatchers.
Field Identification Guide
Use these features to identify Ferruginous Duck in the field.
The Ferruginous Duck can be identified by its distinctive white iris, reddish-brown plumage, and broad, rounded head, which distinguish it from other diving ducks.
The Ferruginous Duck is slightly larger than a Tufted Duck, but smaller than a Pochard.
The male Ferruginous Duck has a reddish-brown body, with a darker back and wings, and a pale yellow eye ring, with little seasonal variation in its plumage.
The female Ferruginous Duck is similar to the male, but with a slightly duller reddish-brown plumage and a less pronounced eye ring.
The Ferruginous Duck has a distinctive call that sounds like a low, growling "krrr" or "krrek", often repeated.
The Ferruginous Duck is a diving bird that feeds on aquatic plants and small invertebrates, and can be seen swimming and diving in wetland areas, with a rapid, direct flight style when disturbed.
The Ferruginous Duck can be confused with the Pochard, but can be distinguished by its white iris, reddish-brown plumage, and broader head, as well as its distinctive call.
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