Njira zosamuka zapachaka, njira zoyimirira komanso zochitika zamasiku onse a Eurasian Bitterns Botaurus stellaris nyengo yozizira ku China.

Magazini:Mbalame Phunziro, 66(1), pp.43-52.

Mitundu (Avian):Eurasian bittern (Botaurus stellaris)

Chidule:

Mbalame za Eurasian Bitterns Botaurus stellaris zomwe zinagwidwa m'nyengo yozizira kum'mawa kwa China zimakhala m'nyengo yachilimwe ku Russia Far East. Kuzindikira nthawi yakusamuka, nthawi ndi mayendedwe, komanso malo oima, omwe amagwiritsidwa ntchito ndi Eurasian Bitterns ku Russia Far East flyway ndikupeza zidziwitso zoyambira zamakhalidwe ndi zachilengedwe kuchokera pakutsata deta. Tidatsata ma Eurasian Bitterns awiri omwe adagwidwa ku China omwe ali ndi makina olumikizirana ndi mafoni padziko lonse lapansi kwa chaka chimodzi kapena zitatu motsatana, kuti tidziwe mayendedwe awo osamuka komanso ndandanda. Tinagwiritsa ntchito mtunda wosunthidwa pakati pa zokonza zotsatizana kuti tidziwe momwe amachitira tsiku lililonse. Anthu awiriwa adakhala nyengo yachisanu kum'mawa kwa China ndipo adayenda mtunda wa 4221 ± 603 km (mu 2015-17) ndi 3844 km (2017) kupita kuchilimwe ku Russia Far East. Zotsatira za mbalame imodzi zasonyeza kuti m’zaka zonse zitatu, mbalameyo inkachita khama kwambiri masana kusiyana ndi usiku, ngakhale kuti kusiyana kwake kunali kosiyana kwambiri ndi nyengo, chifukwa imakhala yotakasuka kwambiri usiku m’chilimwe. Chotsatira chodabwitsa kwambiri cha mbalameyi chinali kusinthasintha kwa kusamuka kwa masika ndi kusowa kwa kukhulupirika kwa malo achilimwe. Kafukufukuyu adawonetsa njira zosamukira ku Eurasian Bittern ku East Asia, ndipo adawonetsa kuti zamoyozi zimakhala zogwira ntchito kwambiri masana chaka chonse.