Joornaalka:Cilmi-baarista Avian, 10 (1), p.19.
Noocyada (Avian):Geese-ka weyn ee cad-cad (Anser albifrons)
Soo koobid:
Aragtida socdaalka ayaa soo jeedinaysa, iyo qaar ka mid ah daraasaadka la taaban karo ayaa muujinaya, in si loogu tartamo goobaha ugu wanaagsan ee taranka loona kordhiyo guusha taranka, muhaajiriinta avian-ka fog-fog waxay u muuqdaan inay qaataan istaraatiijiyad yaraynta wakhtiga inta lagu jiro socdaalka gu'ga, taas oo keentay guuritaanka gu'ga muddada gaaban marka loo eego xilliga dayrta. Isticmaalka gudbinta GPS/GSM, waxaanu la soconay guuritaanka buuxa ee 11 Greater White-fronted Geese (Anser albifrons) ee u dhexeeya koonfur-bari Shiinaha iyo Ruushka Arctic, si aan u muujino wakhtiga socdaalka iyo waddooyinka dadweynaha Aasiyada Bari, oo aan barbar dhigno farqiga u dhexeeya muddada u dhaxaysa socdaalka guga iyo dayrta ee dadweynahan. Waxaan ogaanay in socdaalka gu'ga (79 ± 12 maalmood) ay qaadatay in ka badan laba jeer si loo daboolo masaafada la mid ah xilliga dayrta (35 ± 7 maalmood). Kala duwanaanshahan muddada socdaalka waxaa inta badan lagu go'aamiyay waqti aad u badan oo lagu qaatay gu'ga (59 ± 16 maalmood) marka loo eego dayrta (23 ± 6 maalmood) ee goobaha joogsiga oo aad u badan. Waxaan soo jeedinaynaa in berrigaas, oo loo maleynayo inay yihiin qayb ka mid ah taranka raasumaalka, waxay ku bixiyeen ku dhawaad saddex meelood meel wadarta wakhtiga socdaalka ee goobaha joogsiga gu'ga si ay u helaan dukaamada tamarta ee maalgashiga ugu dambeeya ee taranka, inkasta oo aynaan diidi karin mala-awaalka ah in wakhtiga guga dhalaalku uu sidoo kale gacan ka geystay joogsiga muddada. Dayrta, waxay heleen bakhaar tamarta lagama maarmaanka ah oo ku yaal sagxadda taranka oo ku filan inay gaadhaan Waqooyi-bari Shiinaha meelaha laga dejiyo oo aan joogsi lahayn, taas oo yaraysay waqtiyada joogsiga dayrta oo ay keentay haajiridda dayrta oo ka dhaqso badan guga.
DAABACADDA WAXAA LAGA HELI KARO:
https://doi.org/10.1186/s40657-019-0157-6
