Joornaal:Cilmi-baarista Shimbiraha, 10(1), bogga 19.
Noocyada (Avian):Geesaha Weyn ee Horseed Cad (Anser albifrons)
Soo Koobid:
Aragtida socdaalka ayaa soo jeedinaysa, iyo daraasado cilmiyeed qaarkood waxay muujinayaan, in si loogu tartamo goobaha ugu wanaagsan ee taranka iyo in la kordhiyo guusha taranka, muhaajiriinta doogga fog waxay u janjeeraan inay qaataan istaraatiijiyad yareynta waqtiga inta lagu jiro socdaalka gu'ga, taasoo keentay socdaalka gu'ga oo gaaban marka loo eego kan dayrta. Annagoo adeegsanayna qalabka gudbinta GPS/GSM, waxaan la soconay socdaalka buuxa ee 11 Geese-ka Weyn ee Cad-ka-horjeeda (Anser albifrons) ee u dhexeeya koonfur-bari Shiinaha iyo Arctic-ka Ruushka, si aan u muujinno waqtiga socdaalka iyo waddooyinka dadka Bariga Aasiya, oo aan isbarbar dhigno farqiga u dhexeeya socdaalka gu'ga iyo dayrta ee dadkan. Waxaan ogaanay in socdaalka gu'ga (79 ± 12 maalmood) uu qaatay in ka badan laba jibaar in la daboolo masaafada la mid ah dayrta (35 ± 7 maalmood). Farqigan muddada socdaalka waxaa inta badan lagu go'aamiyay waqti aad u badan oo lagu qaato gu'ga (59 ± 16 maalmood) marka loo eego dayrta (23 ± 6 maalmood) goobo aad u badan oo lagu nasto. Waxaan soo jeedinaynaa in berrigan, oo loo malaynayo inay qayb ahaan yihiin kuwa wax tara, ay ku qaateen ku dhawaad saddex meelood meel wadarta wakhtiga socdaalka goobaha lagu joojiyo gu'ga si ay u helaan bakhaaro tamar si loogu maalgeliyo taranka ugu dambeeya, inkastoo aynaan diidi karin mala-awaalka ah in waqtiga dhalaalka gu'ga uu sidoo kale gacan ka geystay muddada joogsiga. Dayrta, waxay heleen bakhaarro tamar oo lagama maarmaan ah oo ku yaal dhulalka taranka oo ku filan inay gaaraan meelaha lagu hayo ee Waqooyi-bari Shiinaha iyagoon joojin, taasoo yareysay waqtiyada joogsiga ee dayrta waxayna keentay socdaalka dayrta oo ka dhaqso badan gu'ga.
DAABACAAD WAXAA LAGA HELI KARAA:
https://doi.org/10.1186/s40657-019-0157-6
