Ferruginous Duck
Aythya nyroca (Güldenstädt, 1770)
FD
FERDU
2020
Family: Anseriformes > Anatidae
The male Ferruginous Duck is a handsome chestnut-coloured diving duck, small in size, and a rare visitor from eastern Europe. Most records come from south-east England during the winter months.
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BTO RECORDS
Identification
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Population size and trends and patterns of distribution based on BTO surveys and atlases with data collected by BTO volunteers.
CONSERVATION STATUS
This species can be found on the following statutory and conservation listings and schedules.
| Species of European Conservation Concern | Least Concern |
| IUCN Red List of Threatened Species (global) |
Near Threatened 
|
| Schedule 1 license required (to disturb) | No |
| Birds Directive Annex 1 | No |
POPULATION SIZE
We have no population estimates for this scarce species.
| BOU Category | A |
|
First Record
|
Lincolnshire, pre-1771 |
DISTRIBUTION
Ferruginous Ducks mostly winter in southern Britain with clusters of occupied 10-km squares around Chew Valley Lake in Avon, the Thames Valley, Norfolk Broads and the East Midlands. They generally associate with Pochards, with which they are likely to make local movements, so these clusters of sightings may relate to a single bird visiting nearby sites within and across winters.
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Britain and Ireland Breeding Distribution 2008-2011.
More from the Atlas Mapstore. -
Britain and Ireland Winter Distribution 2008-2011.
More from the Atlas Mapstore.
Occupied 10-km squares in UK
| No. occupied in breeding season | 1 |
| % occupied in breeding season | 0.03 |
| No. occupied in winter | 42 |
| % occupied in winter | 1.4 |
European Distribution Map
DISTRIBUTION CHANGE
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Britain and Ireland Breeding Distribution Change 1968–72 to 2008–11.
More from the Atlas Mapstore. -
Britain and Ireland Winter Distribution Change 1981–84 to 2007–11
More from the Atlas Mapstore.
| % change in range in winter (1981–84 to 2007–11) | +81% |
SEASONALITY
Ferruginous Duck is a scarce vagrant, usually detected in winter.
Movement
Information about movement and migration based on online bird portals (e.g. BirdTrack), Ringing schemes and tracking studies.
RINGING RECOVERIES
View a summary of recoveries in the Online Ringing Report.
Biology
Lifecycle and body size information about Ferruginous Duck, including statistics on nesting, eggs and lifespan based on BTO ringing and nest recording data.
PRODUCTIVITY & NESTING
Sample sizes are too small to report Productivity and Nesting statistics for this species.
CODES & CLASSIFICATION
|
Field Codes
|
2-letter: FD | 5-letter code: FERDU | Euring: 2020 |
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Links to more studies from ConservationEvidence.com
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