Tsarin ƙaura na shekara-shekara na Far East Greylag Geese (Anser anser rubrirostris) wanda aka bayyana ta hanyar bin diddigin GPS.

Jarida:Haɗin ilimin dabbobi, 15 (3), shafi 213-223.

Nau'o'i (Avian):Greylag Goose ko Greylag Goose (Anser anser)

Takaitawa:

Greylag Geese mai nisa ishirin, Anser anser rubrirostris, an kama su kuma an sanya su da Tsarin Matsayin Duniya/Tsarin Duniya don Sadarwar Waya (GPS/GSM) don gano wuraren kiwo da lokacin hunturu, hanyoyin ƙaura da wuraren tsayawa. Bayanai na telemetry a karon farko sun nuna alakar da ke tsakanin yankunan da suke noman sanyi a kogin Yangtze, da wuraren da suke tsayawa a arewa maso gabashin kasar Sin, da wuraren kiwo a gabashin Mongoliya da arewa maso gabashin kasar Sin. 10 daga cikin 20 da aka yiwa alama sun ba da isassun bayanai. Sun tsaya kan ƙaura a Kogin Yellow River Estuary, Reservoir Beidagang da Kogin Xar Moron, suna mai tabbatar da waɗannan yankuna a matsayin mahimman wuraren tsayawa ga wannan jama'a. Tsakanin ƙaura na bazara ya kasance kwanaki 33.7 (mutane sun fara ƙaura tsakanin 25 ga Fabrairu da 16 Maris kuma sun kammala ƙaura daga 1 zuwa 9 ga Afrilu) idan aka kwatanta da kwanaki 52.7 a cikin kaka (26 Satumba – 13 Oktoba har zuwa 4 Nuwamba – 11 Disamba). Tsawon tsaida tsaka-tsaki shine kwanaki 31.1 da 51.3 kuma matsakaicin saurin tafiya shine 62.6 da 47.9 km/rana don ƙaura da bazara da kaka, bi da bi. Bambance-bambancen da ke tsakanin ƙaurawar bazara da kaka akan tsawon ƙaura, lokacin tsayawa da gudun hijirar ya tabbatar da cewa tambarin Greylag Geese ya yi tafiya cikin sauri a cikin bazara fiye da kaka, yana goyan bayan hasashen cewa ya kamata su kasance mafi ƙayyadaddun lokaci yayin ƙaura.