Mujalla:Ilimin dabbobi masu hadewa, 15(3), shafi na 213-223.
Nau'in Avian (Avian):Greylag Goose ko Greylag Goose (Anser anser)
Takaitaccen Bayani:
An kama tsuntsaye ashirin na Greylag Geese, Anser anser rubrirostris, kuma an sanya musu tsarin matsayi na duniya/Tsarin Sadarwa ta Duniya (GPS/GSM) don gano wuraren kiwo da lokacin hunturu, hanyoyin ƙaura da wuraren tsayawa. Bayanan telemetry a karon farko sun nuna alaƙa tsakanin yankunan hunturu na Kogin Yangtze, wuraren tsayawa a arewa maso gabashin China, da wuraren kiwo/hawa a gabashin Mongolia da arewa maso gabashin China. Mutane 10 daga cikin mutane 20 da aka yiwa alama sun ba da isassun bayanai. Sun tsaya kan ƙaura a Yellow River Estuary, Beidagang Reservoir da Xar Moron River, suna tabbatar da waɗannan yankuna a matsayin muhimman wuraren tsayawa ga wannan yawan jama'a. Matsakaicin tsawon ƙaura na bazara shine kwanaki 33.7 (mutane sun fara ƙaura tsakanin 25 ga Fabrairu da 16 ga Maris kuma sun kammala ƙaura daga 1 zuwa 9 ga Afrilu) idan aka kwatanta da kwanaki 52.7 a kaka (26 ga Satumba - 13 ga Oktoba har zuwa 4 ga Nuwamba - 11 ga Disamba). Matsakaicin tsawon lokacin tsayawa shine kwanaki 31.1 da 51.3 kuma matsakaicin saurin tafiya shine kilomita 62.6 da 47.9 a kowace rana don hijirar bazara da kaka, bi da bi. Babban bambance-bambancen da ke tsakanin ƙaurar bazara da kaka akan tsawon lokacin ƙaura, tsawon lokacin tsayawa da saurin ƙaura sun tabbatar da cewa Greylag Geese babba ya yi tafiya da sauri a bazara fiye da kaka, yana goyan bayan hasashen cewa ya kamata a iyakance su a lokacin hijirar bazara.
BUGA AKWAI A:
https://doi.org/10.1111/1749-4877.12414
