| Kingdoms / Animalia / Craniata / Aves / Anseriformes / Anatidae / Anas / Species |
| < > Anas specularis - Spectacled duck (Click photographs/illustrations: full picture & further details) |
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Alternative Names (Synonyms) |
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| Bronze-winged duck Kupferspiegelente (German) Canard à lunettes (French) Canard aux ailes bronzies (French) Anade anteojillo (Spanish) Pato anteojillo (Spanish) Pato perro (Spanish) Speculanas specularis |
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Names for newly-hatched |
Duckling, downy. |
Names for non-breeding males or other colour-phases |
Eclipse |
Species Author |
Debra Bourne |
Major References |
B1, B3, B5, B8, B19, B25. 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, D1). Aviornis UK Ringing Scheme recommended average closed ring size: M 12.0mm (D8). |
Management Techniques |
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External Appearance (Morphology)
Measurement & Weight |
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| Length | 21 inches 54cm (B3); 46-54cm (B1). | |
| Adult weight | General | About 960g (B1). |
| Male | About 2.5 lbs. (B8). | |
| Female | Mean 2.2 lbs. (B8). | |
| Newly-hatched weight | -- | |
| Growth rate | -- | |
| Adult | Bill | Male | Dark slate grey, with black nail. |
| Variations (If present) | -- | ||
| Eyes (Iris) | Male | Brown. | |
| Variations(If present) | -- | ||
| Juvenile | Bill | Dark slate grey, with black nail. | |
| Eyes (Iris) | Brown. | ||
| Adult | Male | Orange-yellow with dusky webs. |
| Variations (If present) | -- | |
| Juvenile | Orange-yellow with dusky webs. | |
| Adult | Male | Head and neck
blackish brown, white oval patch between eye and bill, larger white chain and throat patch
extending up either side of neck. Lower neck, breast, abdomen, tail-coverts
and rump
dull brown with buff feather edges, tail blackish. Flanks dull brown with
black-brown feather centres: scalloped appearance. Upperparts
blackish-brown, mantle
feathers buff fringed. Wing dark brown to purple-black, secondaries iridescent pinkish-bronze, with a black subterminal border, white tips. |
| Variations (If present) | Female duller. | |
| Juvenile | White on face reduced or absent, breast heavily streaked. | |
Newly-hatched Characteristics |
| General: Upperparts
black-brown. Bill : Dark grey.Feet: Dark grey. |
Reproductive Season |
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| Time of year | Begins September/October. |
| No. of Clutches | -- |
Nest placement and structure |
| On river islets, on the ground in tall dense grass, down-lined nest. |
Egg clutches |
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| No. of Eggs | Average | -- |
| Range | 4-6 (B1, B8). | |
| Egg Description | Deep cream. Size: 64 x 44mm, weight: 75g (B3). | |
| 30 days (B1, B8). |
| Synchronous. |
| About 100 days (B8). |
Sexual Maturity |
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| Males | |
| Females | |
Feeding Behaviour |
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| Adults | Wade and probe at waters edge, graze on land. |
| Newly-hatched | -- |
Parental Behaviour |
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| Nest-building | Nest as solitary pairs. |
| Incubation | By female only. |
| Newly-hatched | Both parents tend the brood. |
| Juveniles | -- |
Social Behaviour |
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| Intra-specific | Usually found in pairs or family groups. |
| Inter-specific | -- |
Sexual Behaviour |
| Pair bond strong and probably long-term. |
Predation in Wild |
| -- |
| Fly following river courses. | |
| Circadian | -- |
| Seeds, leaves and stems of aquatic plants, also aquatic invertebrates (insects and their larvae, molluscs). |
| -- |
Distribution and Movement (Migration etc.) |
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| Normal | Southern Chile and west-central Argentina southward to Tierra del Fuego. Disperse north and east to Buenos Aires Province (Argentina), Santiago (Chile). Some stay in breeding territory. |
| Occasional and Accidental | -- |
| Introduced | -- |
| Fast-flowing rivers in dense forests preferred, also adjacent standing-water wetlands, slower streams. |
Intraspecific variation |
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Conservation Status |
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| Wild Population - (Importance) |
Widespread but not numerous (B1). |
| CITES listing | -- |
| Red-data book listing | -- |
| Threats | -- |
Captive Populations |
| Not common in collections (B8). |
| -- |