The taiga bean goose (Anser fabalis) is a goose that breeds in northern Europe and Asia. This and the tundra bean goose are recognised as separate species by the American Ornithological Society and the International Ornithologists' Union, but are considered a single species by other authorities (collectively called bean goose). It is migratory and winters further south in Europe and Asia. The taiga and tundra bean goose diverged about 2.5 million years ago and established secondary contact ca. 60,000 years ago, resulting in extensive gene flow.[2]
The length ranges from 68 to 90 cm (27–35 in), wingspan from 140 to 174 cm (55–69 in) and weight from 1.7–4 kg (3.7–8.8 lb).[3] In the nominate subspecies, males average 3.2 kg (7.1 lb) and females average 2.84 kg (6.3 lb).[3] The bill is black at the base and tip, with an orange band across the middle; the legs and feet are also bright orange.
The upper wing-coverts are dark brown, as in the white-fronted goose (Anser albifrons) and the lesser white-fronted goose (A. erythropus), but differing from these in having narrow white fringes to the feathers.
The voice is a loud honking, higher pitched in the smaller subspecies.
The closely related pink-footed goose (A. brachyrhynchus) has the bill short, bright pink in the middle, and the feet also pink, the upper wing-coverts being nearly of the same bluish-grey as in the greylag goose. In size and bill structure, it is very similar to Anser fabalis rossicus, and in the past was often treated as a sixth subspecies of bean goose.
Taxonomyedit
The English and scientific names of the bean goose come from its habit in the past of grazing in bean field stubbles in winter. Anser is the Latin for "goose", and fabalis is derived from the Latin faba, a broad bean.[4]
Taiga bean goose (Anser fabalis sensu stricto) in the background, tundra bean goose (Anser serrirostris) in the foreground and greylag goose (Anser anser) on the right, at Spaarndam, North Holland, the Netherlands
There are three subspecies, with complex variation in body size and bill size and pattern; generally, size increases from north to south and from west to east.
Taiga bean goose (Anser fabalis sensu stricto) (Latham, 1787)
A. f. fabalis (Latham, 1787). Scandinavia east to the Urals. Large; bill long and narrow, with broad orange band. Anser fabalis fabalis is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies.
A. f. johanseni (Delacour, 1951). West Siberian taiga. Large; bill long and narrow, with narrow orange band.
A. f. middendorffii (Severtzov, 1873). East Siberian taiga. Very large; bill long and stout, with narrow orange band.
This section needs expansion. You can help by adding to it. (April 2011)
The taiga bean goose is a rare winter visitor to Britain. There are two regular wintering flocks of taiga bean goose, in the Yare Valley, Norfolk and the Avon Valley, Scotland. A formerly regular flock in Dumfries and Galloway no longer occurs there.
The taiga bean geese Anser fabalis fabalis wintering in Europe are considered to migrate across three different flyways: Western, Central and Eastern; which has been confirmed by stable isotope analysis of their flight feathers.[5]
The population of the Taiga Bean Geese has decreased by roughly 50% since the 1990s and is still declining. From the mid-1990s to 2009 alone, population size fell from an estimated 100,000 to 60,000. The cause of this population decline is due to hunting, primarily in Sweden & Denmark, with inadequate regulation regarding the protection of the Taiga Bean Geese.[6]
Referencesedit
^BirdLife International (2018). "Anser fabalis". IUCN Red List of Threatened Species. 2018: e.T22679875A132302864. doi:10.2305/IUCN.UK.2018-2.RLTS.T22679875A132302864.en. Retrieved 22 February 2022.
^Ottenburghs, Jente; Honka, Johanna; Müskens, Gerard J. D. M.; Ellegren, Hans (26 May 2020). "Recent introgression between Taiga Bean Goose and Tundra Bean Goose results in a largely homogeneous landscape of genetic differentiation". Heredity. 125 (1–2): 73–84. doi:10.1038/s41437-020-0322-z. ISSN 1365-2540. PMC7413267. PMID 32451423.
^ abDunning, John B. Jr., ed. (1992). CRC Handbook of Avian Body Masses. CRC Press. ISBN978-0-8493-4258-5.
^Jobling, James A (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. pp. 48, 157. ISBN978-1-4081-2501-4.
^Fox, A. D.; Hobson, K. A.; de Jong, A.; Kardynal, K. J.; Koehler, G.; Heinicke, T. (2017). "Flyway population delineation in Taiga Bean Geese Anser fabalis fabalis revealed by multi-element feather stable isotope analysis". Ibis. 159 (1): 66–75. doi:10.1111/ibi.12417.
^Heldbjerg, Henning; Johnson, Fred; Koffijberg, Kees; McKenzie, Rae; Nagy, Szabolcs; Jensen, Gitte Høj; Madsen, Jesper (2021). EGMP Population Status and Assessment Report (Report). doi:10.13140/RG.2.2.22689.07525.
Further readingedit
Sangster, George; Oreel, Gerald J. (1996). "Progress in taxonomy of Taiga and Tundra Bean Geese". Dutch Birding. 18 (6): 310–316.
Oates, John (1997). "Identification of Taiga Bean Goose and Tundra Bean Goose". Birding World. 10 (11): 421–426.
Ruokonen, M.; Litvin, K.; Aarvak, T. (2008). "Taxonomy of the bean goose – pink-footed goose". Molecular Phylogenetics and Evolution. 48 (2): 554–562. doi:10.1016/j.ympev.2008.04.038. PMID 18550388.
Brown, Dan (2010). "Identification and taxonomy of bean geese". Birding World. 23 (3): 110–121.
External linksedit
Wikimedia Commons has media related to Anser fabalis.
Wikispecies has information related to Anser fabalis.
Audio recordings of Taiga Bean goose on Xeno-canto.
November 29, 2023
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The taiga bean goose Anser fabalis is a goose that breeds in northern Europe and Asia This and the tundra bean goose are recognised as separate species by the American Ornithological Society and the International Ornithologists Union but are considered a single species by other authorities collectively called bean goose It is migratory and winters further south in Europe and Asia The taiga and tundra bean goose diverged about 2 5 million years ago and established secondary contact ca 60 000 years ago resulting in extensive gene flow 2 Taiga bean gooseBean goose at Slimbridge Wildfowl and Wetlands Centre Gloucestershire EnglandConservation statusLeast Concern IUCN 3 1 1 Scientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataClass AvesOrder AnseriformesFamily AnatidaeGenus AnserSpecies A fabalisBinomial nameAnser fabalis Latham 1787 Range of A fabalis Breeding Passage Non breeding Contents 1 Description 2 Taxonomy 3 Distribution 4 References 5 Further reading 6 External linksDescription editThe length ranges from 68 to 90 cm 27 35 in wingspan from 140 to 174 cm 55 69 in and weight from 1 7 4 kg 3 7 8 8 lb 3 In the nominate subspecies males average 3 2 kg 7 1 lb and females average 2 84 kg 6 3 lb 3 The bill is black at the base and tip with an orange band across the middle the legs and feet are also bright orange The upper wing coverts are dark brown as in the white fronted goose Anser albifrons and the lesser white fronted goose A erythropus but differing from these in having narrow white fringes to the feathers The voice is a loud honking higher pitched in the smaller subspecies The closely related pink footed goose A brachyrhynchus has the bill short bright pink in the middle and the feet also pink the upper wing coverts being nearly of the same bluish grey as in the greylag goose In size and bill structure it is very similar to Anser fabalis rossicus and in the past was often treated as a sixth subspecies of bean goose Taxonomy editThe English and scientific names of the bean goose come from its habit in the past of grazing in bean field stubbles in winter Anser is the Latin for goose and fabalis is derived from the Latin faba a broad bean 4 nbsp Taiga bean goose Anser fabalis sensu stricto in the background tundra bean goose Anser serrirostris in the foreground and greylag goose Anser anser on the right at Spaarndam North Holland the NetherlandsThere are three subspecies with complex variation in body size and bill size and pattern generally size increases from north to south and from west to east Taiga bean goose Anser fabalis sensu stricto Latham 1787 A f fabalis Latham 1787 Scandinavia east to the Urals Large bill long and narrow with broad orange band Anser fabalis fabalis is one of the species to which the Agreement on the Conservation of African Eurasian Migratory Waterbirds AEWA applies A f johanseni Delacour 1951 West Siberian taiga Large bill long and narrow with narrow orange band A f middendorffii Severtzov 1873 East Siberian taiga Very large bill long and stout with narrow orange band Distribution edit nbsp Egg at Museum Wiesbaden GermanyThis section needs expansion You can help by adding to it April 2011 The taiga bean goose is a rare winter visitor to Britain There are two regular wintering flocks of taiga bean goose in the Yare Valley Norfolk and the Avon Valley Scotland A formerly regular flock in Dumfries and Galloway no longer occurs there The taiga bean geese Anser fabalis fabalis wintering in Europe are considered to migrate across three different flyways Western Central and Eastern which has been confirmed by stable isotope analysis of their flight feathers 5 The population of the Taiga Bean Geese has decreased by roughly 50 since the 1990s and is still declining From the mid 1990s to 2009 alone population size fell from an estimated 100 000 to 60 000 The cause of this population decline is due to hunting primarily in Sweden amp Denmark with inadequate regulation regarding the protection of the Taiga Bean Geese 6 References edit BirdLife International 2018 Anser fabalis IUCN Red List of Threatened Species 2018 e T22679875A132302864 doi 10 2305 IUCN UK 2018 2 RLTS T22679875A132302864 en Retrieved 22 February 2022 Ottenburghs Jente Honka Johanna Muskens Gerard J D M Ellegren Hans 26 May 2020 Recent introgression between Taiga Bean Goose and Tundra Bean Goose results in a largely homogeneous landscape of genetic differentiation Heredity 125 1 2 73 84 doi 10 1038 s41437 020 0322 z ISSN 1365 2540 PMC 7413267 PMID 32451423 a b Dunning John B Jr ed 1992 CRC Handbook of Avian Body Masses CRC Press ISBN 978 0 8493 4258 5 Jobling James A 2010 The Helm Dictionary of Scientific Bird Names London Christopher Helm pp 48 157 ISBN 978 1 4081 2501 4 Fox A D Hobson K A de Jong A Kardynal K J Koehler G Heinicke T 2017 Flyway population delineation in Taiga Bean Geese Anser fabalis fabalis revealed by multi element feather stable isotope analysis Ibis 159 1 66 75 doi 10 1111 ibi 12417 Heldbjerg Henning Johnson Fred Koffijberg Kees McKenzie Rae Nagy Szabolcs Jensen Gitte Hoj Madsen Jesper 2021 EGMP Population Status and Assessment Report Report doi 10 13140 RG 2 2 22689 07525 Further reading editSangster George Oreel Gerald J 1996 Progress in taxonomy of Taiga and Tundra Bean Geese Dutch Birding 18 6 310 316 Oates John 1997 Identification of Taiga Bean Goose and Tundra Bean Goose Birding World 10 11 421 426 Ruokonen M Litvin K Aarvak T 2008 Taxonomy of the bean goose pink footed goose Molecular Phylogenetics and Evolution 48 2 554 562 doi 10 1016 j ympev 2008 04 038 PMID 18550388 Brown Dan 2010 Identification and taxonomy of bean geese Birding World 23 3 110 121 External links edit nbsp Wikimedia Commons has media related to Anser fabalis nbsp Wikispecies has information related to Anser fabalis RSPB Birds by Name Bean Goose BirdGuides Bean Goose Page Cyberbirding Bean Goose pictures BirdLife species factsheet for Anser fabalis Anser fabalis Avibase Taiga bean goose media Internet Bird Collection Audio recordings of Taiga Bean goose on Xeno canto Retrieved from https en wikipedia org w index php title Taiga bean goose amp oldid 1185317627, wikipedia, wiki, book, books, library,
