Kingdoms / Animalia / Craniata / Aves / Anseriformes / Anatidae / Chenonetta / Species
< >  Chenonetta jubata - Maned duck (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)

Maned goose
Australian wood duck
Maned wood duck
Wood duck
Woody
Mähnengans (German)Mähnenente (German)
Canard à crinière (French)
Bernache à crinière (French)
Pato de crin (Spanish)
Ganso de melena (Spanish)

Names for newly-hatched

Duckling, downy.

Names for non-breeding males or other colour-phases

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References

Species Author

Debra Bourne

Major References

B1, B3, B6, B8, B19, B25, B26.

Aviculture references:
B7, B11.33.w1, B29, B31, B40, B94, B96, B97, B108, B128.w1, B139
D1, D8

Other References

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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:
  • Perching Ducks and "geese" are generally happier maintained fully-flighted if possible, for example in an aviary for the smaller species, or under flight netting.
  • While the larger species in this group are hardy, the smaller species may be more delicate and require winter shelter. These species eat a high proportion of vegetable matter and appreciate a grazing area. Most of these species are hole-nesters.
  • Many of these species are sociable outside the breeding season, although Cairina moschata - Muscovy duck, Cairina scutulata - White-winged duck, Pteronetta hartlaubii - Hartlaub's duck and Plectropterus gambensis - Spur-winged goose can all be aggressive and require separate enclosures.

(B7, B11.33.w1, B94, D1)

Species-specific information:

  • Maned ducks (maned geese) are generally winter-hardy although dry draught-free shelters should be available in periods of prolonged frost. They are easy to manage, and suitable for mixed collections, but can be aggressive to smaller species. They may also be maintained as a pair or group. They appreciate shallow water with ground cover to the edge of the water, and good short grazing is preferred, also perches over water are appreciated. Feed with grain, pellets and bread, plus ample green food if extensive grazing is not available.
  • These birds are fairly easy to breed, nesting in the northern spring and summer; they may start quite early in the year (March) and eggs are laid mainly from March to May (northern hemisphere); in Australia, nesting may occur in any month, although seasonal variation is expected. Clear fresh water and good grazing are important for breeding. Raised, ground level and buried nest boxes should be provided; they may also use natural close cover and hollow logs. A 12x12x24 inch (30x30x60cm) nest box, with a 4 inch (10cm) diameter entrance hole and a 4 inch (10cm) high partition inside, nesting material being placed in the rear half, has been suggested (B128.w1).
  • Either parent or artificial incubation and rearing may be used, also broody hens. Ducklings may climb out of a brooder box, so a lid is essential. Ducklings are robust and easy to rear; rearing crumbs should be supplemented with fine-chopped greens such as chopped grass, or duckweed (Lemna), and insect food e.g. fresh ants' cocoons has also been recommended initially. The protein level should be decreased after the first week to reduce the risk of Angel Wing They may produce as many as three broods in a season.
  • Hybridisation is uncommon, but has been reported with Alopochen aegyptiacus - Egyptian goose,Chloephaga picta - Upland goose and Aix sponsa - Wood duck.

(B29, B31, B40, B94, B96, B97, B108, B128.w1, B139).

Aviornis UK Ringing Scheme recommended average ring size: L 11.0mm (D8).

Management Techniques

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External Appearance (Morphology)

Measurement & Weight

Length 19-22 inches, 48-56cm (B3); 44-56cm (B1)
Adult weight General 662-984g (B1).
Male 700-955g average 815g (B3); mean 1.8 lbs. (B8).
Female 662-984g average 800g (B3); mean 1.8 lbs. (B8).
Newly-hatched weight --
Growth rate --

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Head

Adult Bill Male Black/dark grey (B6, B8, B25, B26)
Variations (If present) Female: grey (B6, B8, B25, B26)
Eyes (Iris) Male Brown (B6, B25)
Variations(If present) --
Juvenile Bill Grey (B6, B25)
Eyes (Iris) Brown (B6, B25)

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Legs

Adult Male Olive-black (B6, B26)
Variations (If present) Olive-grey (B6, B25)
Juvenile Olive-grey/dark grey (B6, B25)

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Plumage

Adult Male Head and upper neck chocolate-brown with short black nuchal crest, lower neck and breast mottled grey, black and white, flanks grey finely vermiculated with black, abdomen, rump, tail and tail-coverts black. Upperparts grey with black dorsal line along body: mantle, scapulars and tertials grey, outer scapulars black. Wings greater wing coverts have black subterminal bar and white tips, primaries black, secondaries white with metallic green base.
(B3,B6, B8, B25, B26)
Variations (If present) Female:- Duller. Head and neck paler brown, pale buff-white stripes below and above eye, lower neck, breast and flanks brownish mottled, abdomen and undertail coverts white. Upperparts similar to male but duller grey-brown.
(B3, B6, B8, B25, B26)
Juvenile Similar to female but paler; males soon develop vermiculated flanks (B1, B3, B6, B25, B26).

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Newly-hatched Characteristics

General: Upperparts grey-brown with white markings on wings and sides. underparts buffy-white, with eyeline and second line below.
Bill: Grey (B6)
Feet: Grey (B6)

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Reproduction

Reproductive Season

Time of year Variable across Australia, depending on rainfall and available grass for grazing. (B1, B3, B8).
No. of Clutches --

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Nest placement and structure

In tree hollows, not always near water, with down covering eggs (B1, B3, B6, B8, B25, B26).

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Egg clutches

No. of Eggs Average --
Range 8-11, more with dump-nesting (B1); 8-12 (B8).
Egg Description White-cream, Size:- 49x36mm, weight: 41g (B3, B8)

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Incubation

About 28 days (B1, B3, B6, B8).

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Hatching

Synchronous.

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Fledging

57 days (B1); about 60 days (B8)

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Sexual Maturity

Males --
Females --

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Behaviour

Feeding Behaviour

Adults Mainly grazing on land (B1, B3, B25, B26)
Newly-hatched Take insects disturbed by grazing parents (B8).

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Parental Behaviour

Nest-building Solitary nests, chosen by both birds (B1)
Incubation By female, with male defending (B3, B26)
Newly-hatched Tended by both parents (B3, B8)
Juveniles

May be cared for for some time after fledging (B8).

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Social Behaviour

Intra-specific Sociable. Family parties join flocks, usually of less than 100 birds but occasionally of 2,000 or more. More territorial while breeding (B3, B6, B8, B25).
Inter-specific May drive off other birds while breeding.

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Sexual Behaviour

Strong, probably permanent pair bonds (B6, B8, B25).

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Predation in Wild

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Activity Patterns

Often perch in trees or on waterside branches, also roost on water. Graze usually on waterside areas (B8, B25)
Circadian Graze mainly at night (B3, B26)

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Natural Diet

Adults

Basically vegetarian, mainly grazes on land. Green grasses, herbs, sedges plus some aquatic plants in winter. Very few seeds eaten.

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Newly-hatched

Small insects and other invertebrates important in the first four weeks (B3, B8).

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Range and Habitat

Distribution and Movement (Migration etc.)

Normal

Australia, not including arid interior areas;Tasmania. (B1, B8, B19).

Movements: basically sedentary, but disperse across Australia.

Occasional and Accidental

Vagrant to new Zealand

Introduced

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Habitat

Generally inland, lightly-wooded country near water: streams, rivers, ponds, swampy meadows, fresh-water marshes, farm dams with abundant grazing, all preferably with open deciduous woodland surrounding. (B1, B3, B19, B25, B26).

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Conservation

Intraspecific variation

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Conservation Status

Wild Population -
(Importance)

Not globally threatened, locally common; benefited from agriculture and considered an agricultural pest in some areas. (B1, B8).

CITES listing --
Red-data book listing --
Threats --

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Captive Populations

Reasonably common in collections, but not often bred (B8).

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Trade

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