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The Royal Society for the Protection of Birds
Ruddy duck Silhouetted rushes, Inishcreenry, Upper Lough Erne Male ruddy duck swimming in pond
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Ruddy duck

Introduced species

Latin name

Oxyura jamaicensis

Family

Swans, ducks and geese (Anatidae)

Overview

Ruddy ducks are small, stout freshwater diving ducks with broad, short wings and narrow, stiff tails. The male ruddy duck has a bright chestnut body, black crown, white cheeks and blue bill. They swim buoyantly, often with the tail cocked up, and can also gradually submerge without diving. They hardly ever leave the water, being very ungainly on land. They were brought here from North America to enhance captive wildfowl collections. Subsequent escape and successful establishment outside of the UK has resulted in a European conservation problem due to them hybridising the white-headed duck.

Where to see them

The UK's ruddy ducks are concentrated in the West Midlands, northern England, Anglesey and southern Scotland.

When to see them

All year round

What they eat

Aquatic insect larvae and plant seeds

Estimated numbers

EuropeUK breeding*UK wintering*UK passage*
-661-707 pairs4,170 birds-

* UK breeding is the number of pairs breeding annually. UK wintering is the number of individuals present from October to March. UK passage is the number of individuals passing through on migration in spring and/or autumn.

Distribution

Key

Please note that the map is only intended as a guide. It shows general distribution rather than detailed, localised populations.

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2 illustrations

12

Illustrations
Ruddy duck male

Male

Ruddy duck female

Female

Similar birds

Smew (illustration)

Smew

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© 2008 The Royal Society for the Protection of Birds. Charity registered in England and Wales no 207076, in Scotland no SC037654
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Last published: 14/06/2008 01:58:50
Show/hide picture credits
Ruddy duck - Graham Catley
Silhouetted rushes, Inishcreenry, Upper Lough Erne - Andy Hay (rspb-images.com)
Male ruddy duck swimming in pond - Nigel Blake
Bird illustrations by Mike Langman (RSPB)