| Kingdoms / Animalia / Craniata / Aves / Anseriformes / Anatidae / Anser / Species |
| < > Anser fabalis - Bean goose (Click photographs/illustrations: full picture & further details) |
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Alternative Names (Synonyms) |
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| Sushkin's Goose Oie des moissons (French) Saatgans (German) Kurzschnabelgans (German) Genso de las habas (Spanish) Ánsar Campestre (Spanish) Rietgans (Dutch) Sädgås (Swedish) Anser fabalis fabalis Western bean goose Anser fabalis johanseni Johansen bean goose Anser fabalis middendorffi Middendorf bean goose Anser fabalis rossicus Russian bean goose Anser fabalis serrirostris Thick-billed bean goose Bean-goose Anser segetum |
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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, B2, B3, B4, B8, B19, B25, B26.
Other references: Aviculture references: |
ORGANISATIONS |
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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, B95, B108, B128.w1, B129, D1) Species-specific information:
Aviornis UK Ringing Scheme suggested average closed ring size: T 20.0mm (D8). |
| Individual Techniques linked in Wildpro |
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External Appearance (Morphology)
Measurement & Weight |
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| Length | 28-35 inches, 71-89cm (B3) 66-89cm (B1) | |
| Adult weight | General | 3.171-3.948kg (B3, B1) |
| Male | Anser fabalis fabalis mean 7.0 lbs., Anser fabalis rossicus mean 5.9 lbs. (B8) | |
| Female | A . f. fabalis mean 6.3 lbs., Anser fabalis rossicus mean 5.2 lbs. (B8) | |
| Newly-hatched weight | -- | |
| Growth rate | -- | |
| Adult | Bill | Male | Black and yellow-orange |
| Variations (If present) | -- | ||
| Eyes (Iris) | Male | Dark brown. | |
| Variations(If present) | -- | ||
| Juvenile | Bill | Black and greyish-yellow. | |
| Eyes (Iris) | Dark brown. | ||
| Adult | Male | Yellow-orange. |
| Variations (If present) | -- | |
| Juvenile | Greyish-yellow. | |
| Adult | Male | Head and neck
chocolate-brown, sometimes white line around bill base. Breast and abdomen light
brown, flanks feathers darker with pale edging and white line at top of flank. Ventral
area and tail-coverts
white. Upperparts dark brown with white feather edges. Tail grey-brown with broad white tips and edging. Wings brown with whitish edges to wing secondaries and coverts. |
| Variations (If present) | -- | |
| Juvenile | Duller. White feather edges less distinct, mottled underparts. | |
Newly-hatched Characteristics |
| General: Olive-brown
dorsal, yellowish ventral. Bill: Grey. Feet: Grey. |
Reproductive Season |
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| Time of year | Begins May/June. |
| No. of Clutches | -- |
Nest placement and structure |
| In a scrape on the ground, a shallow nest of vegetation, down-lined. |
Egg clutches |
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| No. of Eggs | Average | 4-6 (B1). |
| Range | 3-8 (B1); 3-7 (B8). | |
| Egg Description | White to pale straw-coloured (B3, B8). Size: Anser fabalis fabalis 84 x 55.5mm (B3). | |
| About 27-29 days (B1); 25-30 days, mean 25 days on tundra, 28-29 days on taiga (B8). |
| Synchronous. |
| About 40 days (B1); 45-50 days (B8) |
Sexual Maturity |
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| Males | Two to three years old. |
| Females | Two to three years old. |
Feeding Behaviour |
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| Adults | Forages on land. |
| Newly-hatched | -- |
Parental Behaviour |
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| Nest-building | Loose colonies, nests well dispersed. |
| Incubation | By female, with male defending. |
| Newly-hatched | Tended by both parents. |
| Juveniles | Remain with parents until next breeding season. |
Social Behaviour |
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| Intra-specific | Gregarious. |
| Inter-specific | Family parties may mix with other species of geese in winter. |
Sexual Behaviour |
| Strong, permanent pair bonds. |
Predation in Wild |
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| Circadian | -- |
| Basically vegetarian: herbs, grasses, sedges, plus berries in summer, grain, beans and potatoes in winter. |
| Leaves, buds and flowers of arctic vegetation, insects (aquatic and terrestrial), molluscs, crustaceans and fish roe. |
Distribution and Movement (Migration etc.) |
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| Normal | Anser fabalis fabalis: Taiga,
Scandinavia eastward to Ural mountains. Anser fabalis johanseni: Taiga and wooded tundra, Ural mountains to Lake Baikal. Anser fabalis middendorffi: Taiga east of Lake Baikal in eastern Siberia. Anser fabalis rossicus: Tundra, north Russia and north-west Siberia, Kanin to Taymyr peninsulas. Anser fabalis serrirostris: Tundra, north-east Siberia from Lena delta to Anadyrland. Migratory: winters in north-west and central Europe, Iran, China and Japan, on coastal plains. Further south in cold winters. |
| Occasional and Accidental | Rarely to north Africa. |
| Introduced | -- |
| In high Arctic or taiga, on lakes, pools, bogs, swamps, wet meadows and sluggish rivers. Marshes and agricultural land in winter. |
Intraspecific variation |
| Anser fabalis fabalis Western
bean goose Anser fabalis johanseni Johansen bean goose Anser fabalis middendorffi Middendorf's bean goose Anser fabalis rossicus Russian bean goose Anser fabalis serrirostris Thick-billed bean goose |
Conservation Status |
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| Wild Population - (Importance) |
Generally widespread and numerous (B1). Middendorf's bean goose Anser fabalis middendorffi and Thick-billed bean goose Anser fabalis serrirostris are considered Vulnerable (B44.9.w1). |
| CITES listing | -- |
| Red-data book listing | -- |
| Threats | Habitat loss and hunting threaten the Middendorf's bean goose Anser fabalis middendorffi and Thick-billed bean goose Anser fabalis serrirostris (B44.9.w1). |
Captive Populations |
| Common in collections, easy to keep and breed (B8, B44.9.w1). |
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