Kingdoms / Animalia / Craniata / Aves / Anseriformes / Anatidae / Aythya / Species
< >  Aythya nyroca - Ferruginous pochard (Click photographs/illustrations: full picture & further details)
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INFORMATION AVAILABLE

GENERAL & REFERENCES

EXTERNAL APPEARANCES

REPRODUCTION

BEHAVIOUR

NATURAL DIET

RANGE & HABITAT

CONSERVATION

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General and References

Alternative Names (Synonyms)

White-eyed pochard
Ferruginous white-eye
Ferruginous pochard
Common white-eye
White-eyed duck
Moorente (German)
Fuligule nyroca (French)
Milouin nyroca (French)
Porrón pardo (Spanish)
Pato ojos blancos comun (Spanish)
Witoogeend (Dutch)
Vitögd dykand (Swedish)
Nyroca ferruginea

Names for newly-hatched

Duckling, downy.

Names for non-breeding males or other colour-phases

Eclipse

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References

Species Author

Debra Bourne

Major References

B1, B2, B3, B6, B8, B25, B26, B27.

Aviculture references:
B29, B30, B31, B40, B94, B97, B128.w1, B129
D1, D8

Other References

B44.9.w1, B138
W2
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TAXA Group (where information has been collated for an entire group on a modular basis)

Parent Group

Specific Needs Group referenced in Management Techniques

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Aviculture Information

Notes

General information:
  • Pochards are diving ducks which spend most of their time on water, and are ungainly on land. They are generally hardy, sociable and easy to maintain in captivity. They should be kept with deep water available for diving, three to seven feet suggested (B29), or at least half the area 60cm and preferably one metre deep (D1), with shallow sloping banks for easy exit from the water, also islands, good marginal vegetation and loafing areas. Water providing a good supply of natural animal and vegetable food is preferred.
  • These ducks may be kept in mixed collections with dabbling ducks, including smaller species such as teal. They should be fed wheat in water, encouraging their natural diving behaviour. Pellets should also be fed. They may breed better if a group rather than single pair kept, as this allows their normal group displaying activity.
  • 12x12x14 inch (30x30x35cm) nest box with 5 inch (12.5cm) entrance hole suggested, placed under cover at the edge of the pond (B128.w1).

(B29, B40, B94, B128.w1, D1)

Species-specific information:

  • Ferruginous pochard are winter-hardy, although they should be wintered on ice-free water or shelter provided. Suitable for mixed collections, they are generally peaceable but drakes may fight one another in breeding season. Grain, pellets, bread and green food such as duckweed should be provided; some natural food will be available if they are kept on a deep pond with a muddy bottom.
  • These ducks are fairly easy to breed, provide nest baskets above water and nest boxes in secluded areas in bankside vegetation, laying from late May (B31); April to June (B29). They incubate well and the ducklings are usually easy to hand rear and willing to take food. Duckweed and live invertebrates are useful to supplement starter crumbs.
  • This species commonly hybridises with Aythya spp., Anas spp., all three Netta spp., and Bucephala clangula - Common goldeneye; hybrids have also been reported with Anas spp. and Aix sponsa - Wood duck.

(B29, B30, B31, B40, B94, B97, B129).

Aviornis UK Ringing Scheme suggested average closed ring size: K 10.0mm. (D8).

Management Techniques

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External Appearance (Morphology)

Measurement & Weight

Length 16 inches, 41cm (B3); 38-42cm (B1)
Adult weight General 410-650g (B1)
Male 500-650g average 583g (B3); mean 1.3 lbs. (B8)
Female 410-600g average 520g (B3); mean 1.2 lbs. (B8).
Newly-hatched weight --
Growth rate --

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Head

Adult Bill Male Grey with black nail and paler subterminal line
Variations (If present) Female: Grey with black nail and indistinct paler subterminal line.
Eyes (Iris) Male White.
Variations(If present) Brown.
Juvenile Bill Grey.
Eyes (Iris) Grey-brown.

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Legs

Adult Male Olive grey.
Variations (If present) --
Juvenile Blue-grey.

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Plumage

Adult Male Head, neck, breast, flanks deep chestnut (flanks slightly paler), abdomen white, undertail coverts white with black line cranially extending down from rump. Upperparts black-brown including tail and uppertail coverts. Wing coverts black-brown, flight feathers white with dark brown tips and outer primaries
Variations (If present) Female: duller, browner, white throat.

Eclipse: Similar to female but redder head and breast.

Juvenile Similar to female but paler – buff feather tipping, and mottled abdomen.

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Newly-hatched Characteristics

General: Upperparts dark grey-brown, underparts face and markings yellow.
Bill: Pale horn.
Feet: Dark horn-brown.

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Reproduction

Reproductive Season

Time of year Begins April/May.
No. of Clutches One brood, re-nests if clutch lost.

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Nest placement and structure

In thick vegetation including reedbeds in water. Constructed from reeds, grass and leaves, down-lined.

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Egg clutches

No. of Eggs Average 8-10 (B1)
Range 6-14 (B1)
Egg Description Pale buff, pale brown or yellow-grey.

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Incubation

25-27 days (B1, B8).

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Hatching

Synchronous.

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Fledging

55-60 days (B1); 50-60 days (B8).

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Sexual Maturity

Males One year old.
Females One year old.

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Behaviour

Feeding Behaviour

Adults In shallow water: dive, head-dip, up-end, and dabble.
Newly-hatched --

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Parental Behaviour

Nest-building Solitary nests or in loose groups, built by female,
Incubation By female.
Newly-hatched Tended by female, brooded at night initially.
Juveniles

Independent by fledging time.

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Social Behaviour

Intra-specific Mainly found singly or in small groups
Inter-specific --

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Sexual Behaviour

Seasonal pair bond, male leaves during incubation.

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Predation in Wild

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Activity Patterns

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Circadian Feed mainly nocturnally.

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Natural Diet

Adults

Seeds, green parts and roots of aquatic plants, pus aquatic invertebrates, small fish and amphibians.

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Newly-hatched

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Range and Habitat

Distribution and Movement (Migration etc.)

Normal

Fragmented, western Europe east to western Mongolia, also isolated populations from Liberia eastward to north-east Pakistan.

Migrate to Mediterranean (local population sedentary), sub-Saharan Africa, Caspian Sea (south shores), Middle East, Indian sub-continent, south-east Asia.

Occasional and Accidental

Britain (small numbers each year), Ireland, Norway, Denmark, Sweden, Finland, Belgium, Canary Islands, Cape Verde Islands.

Introduced

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Habitat

Breeding: marshes and shallow pools and lakes with abundant vegetation (fringe and emergent). Larger lakes, lagoons and coastal marshes in winter.

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Conservation

Intraspecific variation

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Conservation Status

Wild Population -
(Importance)

Vulnerable (B44.9.w1). Population has declined (B1).

CITES listing CITES III in Ghana (B1).
Red-data book listing Vulnerable (W2).
Threats Habitat destruction, hunting (B1, B44.9.w1).

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Captive Populations

Common in European collections, rarer in American collections (B8).

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Trade

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