Gano yankin mara kiwo da hanyar ƙaura na Whimbrels (Numenius phaeopus rogachevae) a cikin Gabashin Asiya-Australasian Flyway.

Nau'o'i (Avian):Whimbrel (Numenius phaeopus)

Jarida:Binciken Avian

Takaitawa:

Ƙayyade hanyoyin ƙaura da haɗin kai na tsuntsaye masu ƙaura a matakin yawan jama'a yana taimakawa wajen fayyace bambance-bambance na ƙaura. An gane nau'o'i biyar a cikin Whimbrel (Numenius phaeopus) a cikin Eurasia. Ssp. rogachevae shine nau'ikan da aka kwatanta kwanan nan. Yana haifuwa a tsakiyar Siberiya, yayin da yankin da ba sa kiwo da hanyoyin ƙaura har yanzu ba a san tabbas ba. Mun bi diddigin ƙaura na Eurasian Whimbrels da aka kama a wurare uku marasa kiwo (Moreton Bay a gabashin gabar tekun Ostiraliya, Roebuck Bay a arewa maso yammacin Australia da Sungei Buloh Wetland a Singapore) da wuraren dakatar da ƙaura biyu (Chongming Dongtan da Mai Po Wetland a China). Mun ƙaddara wuraren kiwo kuma mun ƙididdige nau'ikan nau'ikan tsuntsayen da aka yiwa alama a Gabashin Asiya - Australasian Flyway (EAAF) dangane da sanannen rarraba kiwo na kowane nau'in. Daga cikin tsuntsaye 30 da aka yiwa alama, tsuntsaye 6 da 21 da aka haifa a cikin kewayon kiwo na ssp. rogachevae da variegtus, bi da bi; wanda aka haifa a cikin yankin da ake zato tsakanin nau'in kiwo na ssp. phaeopus da rogachevae, kuma an haife su biyu a cikin yanki tsakanin kewayon kiwo na ssp. rogachevae da variegtus. Tsuntsayen da suka yi kiwo a cikin ssp. Rogachevae na kiwo sun shafe lokacin rashin kiwo a arewacin Sumatra, Singapore, Gabashin Java da Arewa maso yammacin Ostiraliya kuma sun tsaya a bakin tekun China yayin ƙaura. Babu wani tsuntsun mu da ya yi kiwo a cikin keɓantaccen kewayon kiwo na nau'in phaeopus. Nazarin da aka yi a baya sun yi hasashen cewa rogachevae whimbrels suna ƙaura tare da Titin Flyway ta Tsakiyar Asiya kuma suna ciyar da lokacin rashin kiwo a Yammacin Indiya da Gabashin Afirka. Mun gano cewa aƙalla wasu rogachevae whimbrels suna ƙaura tare da EAAF kuma suna ciyar da lokacin rashin kiwo a kudu maso gabashin Asiya da Ostiraliya. Da ssp. phaeopus yana cikin mafi ƙarancin rarrabawa a cikin EAAF a yankin yamma, ko wataƙila ba ya faruwa kwata-kwata.