| Kingdoms / Animalia / Craniata / Aves / Anseriformes / Anatidae / Dendrocygna / Species |
| < > Dendrocygna autumnalis - Black-bellied whistling-duck (Click photographs/illustrations: full picture & further details) |
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Alternative Names (Synonyms) |
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| Red-billed whistling duck Black-bellied tree duck Red-billed tree duck Gray-breasted tree duck Herbstpfeifgans (German) Rotschnabel-Pfeifgans (German) Dendrocygne à bec rouge (French) Pato silbador pico rojo (Spanish) Suirirí Piquirrojo (Spanish) Pichichi comun (Spanish) Maisero (Mexican) Dendrocygna autumnalis autumnalis Northern black-bellied whistling duck Dendrocygna autumnalis discolor Southern black-bellied whistling duck |
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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:
Species-specific information:
(J23.13.w10, B29, B30, B31, B96, B97, 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 | 19-21inches, 48-53cm (B3); 43-53cm (B1). | |
| Adult weight | General | 650-1020g (B1); 1.6-2.2 (mean 1.8)lb) (B8). |
| Male | 680-907g average 816g (B3) | |
| Female | 650-1020g average 839g (B3) | |
| Newly-hatched weight | -- | |
| Growth rate | -- | |
| Adult | Bill | Male | Bright red with grey nail. Yellowish behind the nostrils. |
| Variations (If present) | -- | ||
| Eyes (Iris) | Male | Dark brown. | |
| Variations(If present) | -- | ||
| Juvenile | Bill | Dusky. | |
| Eyes (Iris) | Dark brown. | ||
| Adult | Male | Pink. |
| Variations (If present) | -- | |
| Juvenile | Dusky. | |
| Adult | Male | Head and neck: face,
head, upper neck pale grey, crown and stripe down nape mid brown, becoming chestnut brown
on lower neck and breast. Narrow whitish eye ring. Lower breast, abdomen, flanks, tail coverts, tail and rump black, with white mottling on ventral area. Upperparts chestnut-brown, tertials darker brown. Wing dark brown with extensive white patch consisting of the outer upperwing coverts and the bases of the primaries and secondaries. |
| Variations (If present) | Dendrocygna autumnalis discolor Southern black-bellied whistling duck, lower neck and breast greyish. | |
| Juvenile | Duller and paler; belly grey-white with barring. | |
Newly-hatched Characteristics |
| General: Boldly
patterned. Upperparts black with large yellow spots. Underparts yellow. Head
stripy, often black spot on foreneck. Bill: Grey. Feet: Grey. |
Reproductive Season |
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| Time of year | Varies depending on geographical location. Begins in April in the USA. |
| No. of Clutches | May double-brood in some areas. |
Nest placement and structure |
| In a tree cavity or occasionally on the ground; sometimes uses grasses to make shallow bowl. |
Egg clutches |
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| No. of Eggs | Average | -- |
| Range | 12-16 (B1, B8). Can be as many as 65 eggs in dump-nests. | |
| Egg Description | Buff-white. Size: 50 x 39mm, weight: 44g. (B3) | |
| 26-31 days (B1, B8), average 27 days (B8). |
| Synchronous. |
| 53-63 days (B1); 53-56 days (B8). |
Sexual Maturity |
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| Males | One year old. |
| Females | One year old. |
Feeding Behaviour |
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| Adults | Feed by grazing, also wading and dabbling, sometimes upending. |
| Newly-hatched | -- |
Parental Behaviour |
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| Nest-building | Nest in loose groups. |
| Incubation | Both parents incubate. |
| Newly-hatched | Both parents look after the ducklings. |
| Juveniles | -- |
Social Behaviour |
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| Intra-specific | Nest in loose groups. Form compact flocks and sometimes large flocks of thousands of birds. |
| Inter-specific | -- |
Sexual Behaviour |
| Strong, probably permanent pair bonds. |
Predation in Wild |
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| Roost in the day in waterside trees in compact flocks. | |
| Circadian | Nocturnal. |
| Basically vegetarian: grass, seeds and grain (corn and sprouting rice), also roots and tubers of aquatic plants. Occasionally insects and molluscs. |
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Distribution and Movement (Migration etc.) |
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| Normal | Dendrocygna autumnalis
autumnalis: Southeast Texas to central Panama. Dendrocygna autumnalis discolor: East Panama southward through South America to Ecuador in the west, north Argentina in the east. Most populations are mainly sedentary with only local movements, but northernmost birds migrate south for the winter. |
| Occasional and Accidental | Vagrants regularly reach the West Indies. |
| Introduced | -- |
| Tropical lagoons, marshes and streams with partially tree-covered margins; often near agricultural land. Use brackish water as well as fresh water. Lowlands and up to 2,600m. |
Intraspecific variation |
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Conservation Status |
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| Wild Population - (Importance) |
Not globally threatened common and widespread. |
| CITES listing | CITES III in Honduras |
| Red-data book listing | -- |
| Threats | Persecuted where damages crops. |
Captive Populations |
| Northern form D. autumnalis autumnalis common in collections but southern subspecies D. autumnalis discolor much less common. |
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