| Kingdoms / Animalia / Craniata / Aves / Anseriformes / Anatidae / Chloephaga / Species |
| < > Chloephaga rubidiceps - Ruddy-headed goose (Click photographs/illustrations: full picture & further details) |
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Alternative Names (Synonyms) |
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| Ruddy-headed Sheldgoose Ouette à tête rousse (French) Bernache à tête rousse (French) Rotkopfgans (German) Cauquén Colorado (Spanish) Avutarda cabeza colorado (Spanish) |
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Names for newly-hatched |
Gosling, downy. |
Names for non-breeding males or other colour-phases |
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Species Author |
Debra Bourne |
Major References |
B1, B3, B4, B8, B19, B25, B26. Aviculture references: |
Other References |
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TAXA Group (where information has been collated for an entire group on a modular basis) |
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Parent Group |
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Specific Needs Group referenced in Management Techniques |
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Aviculture Information |
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Notes |
General information:
(B7, B29, B40, B95, B128.w1, D1) Species-specific information:
(J23.13.w7, B29, B30, B31, B40, B94, B97, B128.w2, D1). Aviornis UK Ringing Scheme recommended average closed ring size: P 14.0mm; some males Q 15.0mm (D8). |
Management Techniques |
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External Appearance (Morphology)
Measurement & Weight |
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| Length | 18-20 inches 45-50cm (B3); 45-52.5cm (B1) | |
| Adult weight | General | 2000g (B3, B1); mean 4.4 lbs. (B8). |
| Male | -- | |
| Female | -- | |
| Newly-hatched weight | -- | |
| Growth rate | -- | |
| Adult | Bill | Male | Black. |
| Variations (If present) | -- | ||
| Eyes (Iris) | Male | Brown. | |
| Variations(If present) | -- | ||
| Juvenile | Bill | Black. | |
| Eyes (Iris) | Brown. | ||
| Adult | Male | Orange with black markings. |
| Variations (If present) | -- | |
| Juvenile | Orange with black markings. | |
| Adult | Male | Head and neck bright
chestnut, with white ring around eye, grey ring base of neck. Breast, flanks and belly
buff barred with black, shading to chestnut on under-tail coverts. Tail and rump
black. Upperparts pale/mid grey. Wings: secondaries and coverts white except greater secondary coverts (speculum) metallic green, tertials brown, primaries black. |
| Variations (If present) | -- | |
| Juvenile | Duller, with speculum dark brown. | |
Newly-hatched Characteristics |
| General: Underparts
including most of neck and face silver-grey. Upperparts including crest and
hindneck blackish. Black mark over eyes. Bill: -- Feet: -- |
Reproductive Season |
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| Time of year | Begins September/October. |
| No. of Clutches | -- |
Nest placement and structure |
| On the ground among boulders or hidden in vegetation, nest has down lining. |
Egg clutches |
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| No. of Eggs | Average | -- |
| Range | 5-8 (B1); 3-8 (B8). | |
| Egg Description | Cream-buff/pale brown. Size: 65 x 48mm. | |
| About 30 days (B1); 29-30 days (B8). |
| Synchronous. |
| 60-80 days (B8). |
Sexual Maturity |
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| Males | Probably two to three years old. |
| Females | Probably two to three years old. |
Feeding Behaviour |
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| Adults | Forages mainly on land, digs with bill. |
| Newly-hatched | -- |
Parental Behaviour |
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| Nest-building | In single pairs or loose groups. |
| Incubation | By female only, with male guarding. |
| Newly-hatched | Tended by both parents. Sometimes broods merge. |
| Juveniles | -- |
Social Behaviour |
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| Intra-specific | Territorial while breeding, otherwise sociable. |
| Inter-specific | Mix with Chloephaga poliocephala - Ashy-headed goose and less frequently with Chloephaga picta - Upland goose. |
Sexual Behaviour |
| Strong, permanent pair bonds. |
Predation in Wild |
| Patagonian fox Dusicyon griseus - introduced to Falklands. |
| Mainly terrestrial but also found on the water. | |
| Circadian | -- |
| Basically vegetarian. Roots, stems, leaves and seed-heads of grasses and sedges. |
| -- |
Distribution and Movement (Migration etc.) |
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| Normal | Breeding: Tierra del
Fuego and Falkland Islands. Winter: north to Buenos Aires province, Argentina. Tierra del Fuego population migratory; Falklands population sedentary but with local movements. |
| Occasional and Accidental | -- |
| Introduced | -- |
| Open coastal grasslands and meadows. |
Intraspecific variation |
| -- |
Conservation Status |
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| Wild Population - (Importance) |
Not considered threatened, although population has declined (B1). |
| CITES listing | -- |
| Red-data book listing | -- |
| Threats | Predation by Patagonian fox Dusicyon griseus (introduced to Falklands). Also persecuted as pest (B,. B8). |
Captive Populations |
| Well represented in collections.(B8). |
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