An estimated 50% decline in Taiga Bean Geese A. fabalis between the mid-1990s and 2015 contrasted increasing numbers of Tundra Bean Goose A. serrirostris wintering in Western Europe at the same time. Seber dead-recovery analysis of metal-ringed individuals used to investigate year- and age effects on survival estimates from historical ringing data of both taxa caught in The Netherlands 1964
Anser fabalis Name Homonyms Anser fabalis rossicus Buturlin, 1933 Common names Tundramouergäns in Luxembourgish tundrasädgås in Swedish sädgås, rasen rossicus in Swedish sädgås, underarten rossicus in Swedish Bibliographic References. Lindell, L. (2002) Sveriges
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Anser fabalis fabalis is one of the species to which Halicarcinus planatus · Halicarcinus rostratus · Halicarcinus setirostris · Halicarcinus Littorina atkana · Littorina coccinea · Littorina fabalis · Littorina fasciata Sardel jávská, Czech, Czechia, Thryssa setirostris · vernacular.
Our ability to define the population status, migration routes and seasonal distribution of Bean Geese Anser fabalis throughout the annual cycle in East Asia is severely compromised by the presence of two subspecies (Eastern Taiga Bean Goose A. f. middendorffii and Eastern Tundra Bean Goose A. f. serrirostris ), which are difficult to differentiate in the field.
2. 2. 2. 2.
(1) In order to investigate the subspecies of Bean Geese Anser fabalis wintering in Japan, the points of field identification for A. f. serrirostris and A. f. middendorfi were discussed. (2) When nearby these two subspecies can be distinguished easily by the shape of the bill.
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Anser cygnoides: Swan goose: inland Mongolia, northernmost China, and southeastern Russia Anser fabalis: Taiga bean goose: northern Europe and Asia Anser brachyrhynchus: Pink-footed goose: northwestern Europe, especially Ireland, Great Britain, the Netherlands and western Denmark Anser serrirostris: Tundra bean goose: northern Siberia Anser
De två underarterna av sädgås; tajgasädgås (Anser fabalis fabalis) respektive tundrasädgås (Anser fabalis rossicus) är svåra att skilja åt i fält. Det är framför allt genom att studera färgsättning och form på huvud och näbb som identifiering kan göras. I dentifiering av tundra- respektive tajgasädgås .
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serrirostris(CHANG LI) In order to determine their breeding and moulting sites we fitted eight Taiga Bean Geese Anser fabalis fabalis and two Tundra Bean Geese A. f.
serrirostris), which are difficult to differentiate in the field. Вылет гуменников в утренние часы на поля и их кормежка. Живой звук!
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aeneus, albicoxa, albifrons, algirus, amatus, amoris, anceps, apicalis, basilaris, Scirus elaphus, hexophthalmus, latirostris, longirostris, obisium, paludicola, sagax, setirostris, stabulicola, vulgaris. Trachelina anas, anser, o
2. 2. 2.
Anser fabalis: Common name: Bean Goose: Population name: serrirostris: Central & Eastern Siberia: Breeding range: Taymyr to E Chukotka (excl. Kamchatka) Non-breeding range: E China, Korean peninsula: Red List Category: Least Concern: Ramsar regions: Asia Notes
31. 32. 33. 34. 35. 36. 37.
Kamchatka) Non-breeding range: E China, Korean peninsula: Red List Category: Least Concern: Ramsar regions: Asia Notes An estimated 50% decline in Taiga Bean Geese A. fabalis between the mid-1990s and 2015 contrasted increasing numbers of Tundra Bean Goose A. serrirostris wintering in Western Europe at the same time. Seber dead-recovery analysis of metal-ringed individuals used to investigate year- and age effects on survival estimates from historical ringing data of both taxa caught in The Netherlands 1964 Fakta Vingefang: 147-175 cm Længde: 66-88 cm Vægt han: 2.600-3.200 g Vægt hun: 2.300-2.800 g Ynglealder: 2-3 år Kuldstørrelse: 4-6 æg Antal kuld: 1 Rugetid: 27-29 dage Anser f. rossicus is listed as such due to low breeding population numbers.