| Kingdoms / Animalia / Craniata / Aves / Anseriformes / Anatidae / Anas / Species |
| < > Anas specularioides - Crested duck (Click photographs/illustrations: full picture & further details) |
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Alternative Names (Synonyms) |
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| Schopfente (German) Canard huppé (French) Anade jarjual (Spanish) Pato crestón (Spanish) Anas specularioides alticola Andean crested duck Anas specularioides specularioides Patagonian crested duck Lophonetta specularioides |
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Names for newly-hatched |
Duckling, 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, B30, B40, B94, B128.w1, D1) Species-specific information:
(J23.13.w7, B29, B30, B94, B128.w2, D1) Aviornis UK Ringing Scheme recommended average ring size: Anas specularioides specularioides L 11.0mm; Anas specularioides alticola M 12.0mm (D8). |
Management Techniques |
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External Appearance (Morphology)
Measurement & Weight |
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| Length | 20-24 inches, 51-61cm (B3, B1). | |
| Adult weight | General | About 1000g (B1). |
| Male | 1070-1180g (B3); mean 2.4 lbs. (B8). | |
| Female | About 900g (B3); mean 2.0 lbs. (B8). | |
| Newly-hatched weight | -- | |
| Growth rate | -- | |
| Adult | Bill | Male | Dark grey. |
| Variations (If present) | -- | ||
| Eyes (Iris) | Male | Orange-red (Anas specularioides specularioides); Yellow (Anas specularioides alticola). | |
| Variations(If present) | -- | ||
| Juvenile | Bill | Dark grey. | |
| Eyes (Iris) | Orange-red (Anas specularioides specularioides); Yellow (Anas specularioides alticola). | ||
| Adult | Male | Dark grey. |
| Variations (If present) | -- | |
| Juvenile | Dark grey. | |
| Adult | Male | Head and neck pale
grey-brown with loose crest on neck, brown stripe wide around eye, tapering and fading
towards back of head, whitish throat and foreneck. Breast, abdomen, flanks and ventral
region pale grey-brown with darker spotting (dark feather centres) largest on flanks;
pinkish on breast. Tail and undertail coverts blackish, uppertail coverts and rump pale grey-brown, rest of upperparts darker grey-brown. Wing earth-brown, secondaries iridescent bronze/green, with black subterminal band, wide white tips (speculum bronze-green with caudal black and white line). |
| Variations (If present) | Anas specularioides
alticola larger, darker, speculum
pinker, underparts browner and less spotted. Female: has a shorter crest. |
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| Juvenile | Shorter or absent crest, browner face, whiter abdomen. | |
Newly-hatched Characteristics |
| General: Upperparts
earth-brown with white spots on wing, sides of back, rump. Underparts, forehead and
sides of face dirty-white with dark eyestripe. Bill : Grey with pinkish lower mandible.Feet: Dark grey. |
Reproductive Season |
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| Time of year | Geographical variation: Mainly January-March in Andes, mainly October-December in southern areas. |
| No. of Clutches | May double-brood. |
Nest placement and structure |
| Usually on small islets or lake shores, occasionally much further from water. In vegetation, on the ground. |
Egg clutches |
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| No. of Eggs | Average | -- |
| Range | 5-8 (B1); 5-9 (B8). | |
| Egg Description | Cream coloured. Size: 63 x 46mm, weight: 56g (B3). | |
| About 30 days (B1, B8). |
| Synchronous. |
| 10-11 weeks (B1); 70-90 days (B8). |
Sexual Maturity |
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| Males | -- |
| Females | -- |
Feeding Behaviour |
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| Adults | Wade, dabble, head-dip and up-end, in the shallows. |
| Newly-hatched | -- |
Parental Behaviour |
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| Nest-building | Nest as solitary pairs. |
| Incubation | By female. |
| Newly-hatched | Tended by both parents. |
| Juveniles | -- |
Social Behaviour |
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| Intra-specific | Highly territorial and aggressive. |
| Inter-specific | Aggressive to other species in their territory. |
Sexual Behaviour |
| Monogamous. |
Predation in Wild |
| Black-crowned night herons and skuas take ducklings. |
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| Circadian | -- |
| Mainly aquatic invertebrates: insects, insect larvae, molluscs, and crustaceans. Small amounts of aquatic plants, mainly filamentous algae. |
| Mainly aquatic invertebrates: insects, insect larvae, molluscs, and crustaceans. Small amounts of aquatic plants, mainly filamentous algae. |
Distribution and Movement (Migration etc.) |
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| Normal | Anas specularioides
alticola Andes, southern Peru to northern Argentina Anas specularioides specularioides Central Chile and western Argentina southward to Tierra del Fuego, Falkland Islands. Mainly sedentary, but high altitude and high latitude birds disperse to coasts in winter. |
| Occasional and Accidental | -- |
| Introduced | -- |
| Marshes, swamps, lakes, pools and lagoons, fresh, brackish or saline, sea level to high elevation; sheltered bays on coast. |
Intraspecific variation |
| Anas specularioides alticola Andean
crested duck Anas specularioides specularioides Patagonian crested duck |
Conservation Status |
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| Wild Population - (Importance) |
Common (B1). |
| CITES listing | -- |
| Red-data book listing | -- |
| Threats | -- |
Captive Populations |
| Anas specularioides specularioides well established in collections, but Anas specularioides alticola very rare (B8). |
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