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< >  Anas eatoni - Eaton's pintail (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)

Southern pintail
Kerguelen pintail (Anas eatoni eatoni)
Crozet pintail (Anas eatoni drygalskii)
Anas acuta eatoni
Anas acuta eatoni
- Kerguelen pintail
Anas acuta drygalskii - Crozet pintail

Names for newly-hatched

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Names for non-breeding males or other colour-phases

Eclipse.

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References

Species Author

Debra Bourne

Major References

B1, B3, B5, B8, B19, B25, B44.9.w1.

Aviculture references:
B7, B29, B30, B40, B94, B128.w1, B128.w2
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:
  • Dabbling Ducks are generally hardy, easy to maintain and easy to breed. Shelter may be required by some of the smaller species in winter. They should be provided with cover (including marginal pond cover) and loafing areas as well as water. A pen which is 50% water is suggested. The water may be shallow (i.e. no more than two feet deep is required), and muddy areas for dabbling in are also appreciated. These ducks are generally good in mixed collections, although the smaller and quieter species may be bullied. Territorial disputes between ducks of the same species may be avoided by keeping only one pair of each species in an enclosure, unless the area is very large. For a single pair of ducks a pen are of 50 to 100 square metres, depending on the size of duck, should be provided.
  • A diet based on wheat and pellets is suggested, with maintenance pellets changed to breeders pellets for the breeding season. Bread and greenfood are also appreciated. Grit should always be available, with soluble grit (e.g. oystershell grit) as a calcium source when breeding.
  • Most species are ground nesters and both close ground cover and ground level nest boxes should be provided. Hand-rearing is generally preferred, as these ducks are generally poor parents in captive conditions, particularly in enclosures shared with other waterfowl. These ducks are prone to hybridization, particularly with closely related species, which should be kept apart from one another.
  • Pintails generally do well in mixed collections with other ducks, given sufficient space to avoid bullying, but may do better in individual pens, and should have plenty of ground cover.

(B7, B29, B30, B40, B94, B128.w1, D1)

Species-specific information:

  • Eaton's pintails are not commonly kept and have been bred only rarely in captivity. They nest in natural ground cover and may lay April to May.

(B29, B30, B94, B128.w2).

Aviornis UK Ringing Scheme recommended average ring size: J 9.0mm (D8).

Management Techniques

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External Appearance (Morphology)

Measurement & Weight

Length 40-45cm (B25); 35-45cm (B1).
Adult weight General 400-500g (B1); Anas eatoni eatoni 1.3 lbs. (B8).
Male Anas eatoni drygalskii mean 1.1 lbs. (B8).
Female Anas eatoni drygalskii mean 15.5 ounces (B8).
Newly-hatched weight --
Growth rate --

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Head

Adult Bill Male Blue-grey with black culmen stripe and nail, duller in female, shorter than in Anas acuta - Northern pintail (B8, B25).
Variations (If present) Duller blue-grey with black culmen stripe and nail (B25).
Eyes (Iris) Male Brown (B25)
Variations(If present) --
Juvenile Bill Dull dark grey (B25).
Eyes (Iris) Brown (B25).

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Legs

Adult Male Dark grey (B25).
Variations (If present) --
Juvenile Dark grey (B25).

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Plumage

Adult Male Head and neck reddish-brown with fine dark markings, plain throat; upperparts and flanks darker - dark red-brown with paler edging to feathers, underparts reddish-brown, spotted. Tail fairly long and black with paler side feathers. Wing coverts grey, greater coverts buff-tipped, secondaries green with black subterminal and white tips (B5, B25).
Variations (If present) Female:- head and neck reddish-brown, fine dark markings, plain throat, underparts reddish-brown, spotted, upperparts and flanks darker – feathers dark red-brown with paler edging to feathers. Wing brown, greater coverts white-tipped, secondaries brown with broad white tips (B5, B25).

Occasional male: brighter plumage – chocolate head and white stripe on throat and up neck as in Anas acuta (Anas acuta - Northern pintail).

Eclipse:- (May-November on Kerguelen I.) Similar to female except wings.

Anas eatoni drygalskii:- flanks and underparts finely and wavily barred (B5, B25).

Juvenile Similar to female, but underparts more streaked.

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Newly-hatched Characteristics

General: Upperparts brown, with reddish-buff markings on wings and down side of body; underparts rufous-whitish, dark stripe eye to nape on reddish brownish face, sometimes second lower short streak near nape (B5).
Bill: Dark grey (B5).
Feet: Dark grey (B5).

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Reproduction

Reproductive Season

Time of year November to February or March (B1, B25); on Crozet Island mid-October to late November (B8).
No. of Clutches --

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Nest placement and structure

Among tussocks or in rocky clefts, well constructed grass & moss, down-lined (B5); on Crozet Island also use deserted burrows of white-chinned petrels (B8).

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Egg clutches

No. of Eggs Average --
Range 3-6 (B5); 3-5 (B8).
Egg Description Cream, pale olive green or olive-buff (B8).

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Incubation

26 days (captive) (B8).

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Hatching

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Fledging

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Sexual Maturity

Males --
Females --

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Behaviour

Feeding Behaviour

Adults Feed in small groups, on shore and in sheltered bays. Burrow in mud, up-end and dive (B5, B8, B25).
Newly-hatched --

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Parental Behaviour

Nest-building By female (B8).
Incubation --
Newly-hatched Tended by female, but male sometimes remains with family (B8).
Juveniles

Apparently abandoned by female at fairly early age, and may gather together (B5, B8).

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Social Behaviour

Intra-specific Sociable, usually seen in small groups, gather in larger numbers at night (B5, B25).
Inter-specific --

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Sexual Behaviour

Possibly extended pair bonds (B8).

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Predation in Wild

Skuas, black rats, feral cats prey on eggs and ducklings, skuas also on adults on Crozet Island (B8).

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Activity Patterns

Perch on rocks and boulders, run well, fly easily (B5, B8).
Circadian On Kerguelen Island forage at low tide on tidal flats (B8).

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Natural Diet

Adults

Aquatic invertebrates – crustaceans etc., also seeds, grass (B5, B8).

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Newly-hatched

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Range and Habitat

Distribution and Movement (Migration etc.)

Normal Anas eatoni eatoni: Kerguelan Island, introduced St Paul Island, Amsterdam Island (southern Indian Ocean) (B1, B8, B19).

Anas eatoni drygalskii Crozet Islands (southern Indian Ocean). Reach 1,600 feet (B1, B8, B19).

Occasional and Accidental

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Introduced

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Habitat

Often on shores and sheltered bays as well as lowland freshwater ponds, streams, rivers, lakes (B5, B8).

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Conservation

Intraspecific variation

Kerguelen pintail (Anas eatoni eatoni)
Crozet pintail (Anas eatoni drygalskii)
(Frequently considered subspecies (Anas acuta eatoni, Anas acuta drygalskii) of Anas acuta - Northern pintail.)

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Conservation Status

Wild Population -
(Importance)

Low numbers, although population appears stable (B1, B8). Anas eatoni eatoni considered vulnerable and Anas eatoni drygalskii endangered (B44.9.w1).

CITES listing --
Red-data book listing --
Threats Introduced predators, particularly feral cats (B8, B44.9.w1).

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Captive Populations

Found in a few collections (B30); some Anas eatoni drygalskii but no Anas eatoni eatoni (B44.9.w1).

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Trade

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