| Kingdoms / Animalia / Craniata / Aves / Anseriformes / Anatidae / Anas / Species |
| < > Anas americana - American wigeon (Click photographs/illustrations: full picture & further details) |
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Alternative Names (Synonyms) |
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| Baldpate Wigeon Widgeon Amerikanische Pfeifente (German) Nordamerikanische Pfeifente (German) Canard dAmérique (French) Canard siffleur dAmérique (French) Siffleur dAmerique (French) Silbón Americano (Spanish) Pato americano (Spanish) Amerikaanse Smient (Dutch) Amerikansk bläsand (Swedish) Mareca americana |
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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, B2, B3, B5, B8, B19, B25, B26, B27. Aviculture references: |
Other References |
B138 |
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:
(B7, B29, B31, B40, B94, B96, B97, B108, 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 |
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| Length | 18-23 inches, 46-58cm (B3): 45-56cm (B1) | |
| Adult weight | General | 680-770g (B1). |
| Male | Average 770g (B3); mean 1.7lbs. (B8). | |
| Female | Average 680g (B3); mean 1.5 lbs. (B8). | |
| Newly-hatched weight | -- | |
| Growth rate | -- | |
| Adult | Bill | Male | Blue-grey with a black tip. |
| Variations (If present) | -- | ||
| Eyes (Iris) | Male | Brown. | |
| Variations(If present) | -- | ||
| Juvenile | Bill | Blue-grey with a black tip. | |
| Eyes (Iris) | Brown. | ||
| Adult | Male | Dark grey. |
| Variations (If present) | -- | |
| Juvenile | Dark grey. | |
| Adult | Male | Forehead and central crown
white, head and neck buff/white with intense black speckling; glossy green-black
band surrounding eye and back to run down sides of hindneck. Breast, flanks and
upperparts mainly pinkish brown with fine black vermiculations,
abdomen and sides behind flanks bright white. Tail black with grey outer feathers, tail-coverts black. Tertials elongated, pointed, black with white edging, primaries and their coverts grey-brown, speculum formed by secondaries: glossy green, shading to black ends; lesser coverts brownish, greater coverts white with black tips. |
| Variations (If present) | Female: head
and neck white, with dark flecking, breast pinkish, flanks medium brown
with paler feather edges, upperparts darker. Abdomen white. Primaries
and their coverts
dark grey-brown, secondaries
greenish black (duller than male), with white tips, secondary coverts
brown with pale feather tips, greater coverts
narrow black tips, wide white band subterminally. Eclipse: Similar to female but richer chestnut brown, upperparts blacker, and retains wing pattern. |
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| Juvenile | As female, speculum dull, upperparts plainer. | |
Newly-hatched Characteristics |
| General: Upperparts brown
(very dark crown and back), face reddish, small eyeline, underparts and
spots on wings and sides buffish. Bill: Dark grey. Feet: Dark grey. |
Reproductive Season |
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| Time of year | Begins April/May. |
| No. of Clutches | -- |
Nest placement and structure |
| Concealed in vegetation on the ground, often some distance from water, a depression lined with grass and down. |
Egg clutches |
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| No. of Eggs | Average | 7-9 (B8) |
| Range | 7-9 (B1); 6-12 (B8). | |
| Egg Description | Creamy. Size: 54 x 35mm, weight: 43g. | |
| 23-25 days (B1); mean 25 days (B8). |
| Synchronous. |
| About 37-48 days (B1); about 37-63 days (mean 40-50 days) (B8). |
Sexual Maturity |
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| Males | One, occasionally two years old. |
| Females | One, occasionally two years old. |
Feeding Behaviour |
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| Adults | Grazes while walking and feeds while swimming in shallows. |
| Newly-hatched | -- |
Parental Behaviour |
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| Nest-building | Nests as solitary pairs or in small groups. |
| Incubation | By female only. |
| Newly-hatched | Tended by female. |
| Juveniles | Usually with female until fledged, but female may abandon earlier to fly to moulting site, or stay, start moulting and then be abandoned by fledged ducklings. |
Social Behaviour |
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| Intra-specific | Gregarious, found in small flocks except when nesting. |
| Inter-specific | Takes food from swans, geese
and ducks that can reach favoured plants (wild celery) growing beyond their reach. Sometimes flock with Anas strepera - Gadwall. |
Sexual Behaviour |
| Seasonal pair bonds, male usually leaves by about a week into incubation. |
Predation in Wild |
| Eggs taken by crows and skunks. |
| Generally fairly terrestrial. | |
| Circadian | -- |
| Basically vegetarian. Grasses, sedges, herbs, aquatic plants, seeds, also some snails and insects. |
| -- |
Distribution and Movement (Migration etc.) |
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| Normal | North-western to
central-eastern North America, south to north-eastern California and northern Colorado. Winters on the Atlantic and Pacific coasts of North America, inland south to Panama, islands of Bahamas and Hawaii. |
| Occasional and Accidental | Small numbers regularly to
Europe regularly seen in Britain. Occasionally vagrants to north-eastern Siberia, Japan, Greenland, Newfoundland, Bermuda, Aleutian Islands. |
| Introduced | -- |
| Freshwater swamps, lakes, pools with good grazing around. Large rivers, lakes and coasts in winter. |
Intraspecific variation |
| -- |
Conservation Status |
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| Wild Population - (Importance) |
Common. Winter population may be more than 6.5 million (B1). |
| CITES listing | -- |
| Red-data book listing | -- |
| Threats | -- |
Captive Populations |
| Common in collections, especially in America (B8). |
| -- |