Nau'in Avian (Avian):Babban Bustard (Otis tarda)
MujallarJ:ilimin halittar Ornithology
Takaitaccen Bayani:
Babban Bustard (Otis tarda) yana da bambancin tsuntsu mafi nauyi da zai yi ƙaura da kuma mafi girman matakin bambancin girman jima'i tsakanin tsuntsaye masu rai. Duk da cewa an tattauna ƙaurar nau'in a cikin wallafe-wallafe, masu bincike ba su san komai game da yanayin ƙaura na nau'ikan a Asiya ba (Otis tarda dybowskii), musamman maza. A cikin 2018 da 2019, mun kama nau'ikan O. t. dybowskii guda shida (maza biyar da mace ɗaya) a wuraren kiwo a gabashin Mongolia kuma muka yi musu alama da na'urorin watsa tauraron dan adam na GPS-GSM. Wannan shine karo na farko da aka bi diddigin manyan Bustards na ƙananan nau'ikan gabas a gabashin Mongolia. Mun sami bambance-bambancen jinsi a cikin yanayin ƙaura: maza sun fara ƙaura daga baya amma sun isa da wuri fiye da mace a lokacin bazara; maza suna da kashi 1/3 na tsawon lokacin ƙaura kuma sun yi ƙaura kusan kashi 1/2 na nisan mace. Bugu da ƙari, Manyan Bustards sun nuna aminci sosai ga wuraren kiwo, bayan kiwo, da wuraren hunturu. Don kiyayewa, kashi 22.51% ne kawai na gyaran wurin GPS na bustards suka kasance a cikin yankunan kariya, kuma ƙasa da kashi 5.0% ga wuraren hunturu da kuma lokacin ƙaura. Cikin shekaru biyu, rabin Great Bustards da muka bi diddiginsu sun mutu a wuraren hunturu ko kuma a lokacin ƙaura. Muna ba da shawarar kafa ƙarin wurare masu kariya a wuraren hunturu da kuma sake tsara hanyoyin ko hanyoyin wutar lantarki a ƙarƙashin ƙasa a yankunan da Great Bustards ke da yawa don kawar da karo.
