Ku-ornithology, ukufuduka kwezinyoni ezisencane amabanga amade kusalokhu kuyindawo eyinselele yocwaningo. Thatha iWhimbrel yase-Eurasian (I-Numanius phaeopus), Ngokwesibonelo. Ngenkathi ososayensi belandelele kabanzi amaphethini okufuduka komhlaba wonke ama-whimbrel abantu abadala, aqongelela ingcebo yedatha, ulwazi mayelana nezingane belulokhu luyindlala kakhulu.
Ucwaningo lwangaphambilini lubonise ukuthi ama-whimbrel amadala abonisa amasu ahlukene okufuduka ngesikhathi sokuzalanisa ngo-Ephreli nangoMeyi lapho ehamba esuka ezindaweni zawo zasebusika eya ezindaweni azo azalela kuzo. Abanye bandizela ngokuqondile e-Iceland, kuyilapho abanye behlukanisa uhambo lwabo zibe izingxenye ezimbili ngokuma. Kamuva, kusukela ekupheleni kuka-July kuya ku-August, ama-whimbrel amaningi amadala andizela ngokuqondile ezindaweni zawo zasebusika eNtshonalanga Afrika. Kodwa-ke, ulwazi olubucayi ngezingane—njengemizila yazo efudukayo kanye nesikhathi—sekuyisikhathi eside kuhlale kuyimfihlakalo, ikakhulukazi phakathi nokufuduka kwazo kokuqala.
Ocwaningweni lwakamuva, ithimba labacwaningi base-Iceland lisebenzise izisetshenziswa ezimbili zokulandelela ezingasindi ezithuthukiswe yi-Global Messenger, amamodeli we-HQBG0804 (4.5g) kanye ne-HQBG1206 (6g), ukuqapha ama-whimbrel ezingane ayi-13. Imiphumela yembule ukufana okuthakazelisayo nomehluko phakathi kwama-whimbrel ezingane nabadala phakathi nokufudukela kwawo kokuqala eNtshonalanga Afrika.
Njengabantu abadala, ama-whimbrel amaningi ezingane ayekwazi ukundiza njalo esuka e-Iceland aye eNtshonalanga Afrika. Nokho, kwabonwa nokwehluka okuhlukile. Intsha ivamise ukungena ngemuva kwesikhathi kunabantu abadala futhi mancane amathuba okuthi ilandele umzila oqondile wokufuduka. Kunalokho, ayema kaningi endleleni futhi andiza kancane uma kuqhathaniswa. Siyabonga kubalandeleli be-Global Messenger, ithimba lase-Icelandic lathwebula, okokuqala ngqa, uhambo lokufuduka okunganqamuki lwe-whimbrels yentsha esuka e-Iceland iya eNtshonalanga Afrika, ihlinzeka ngedatha ebalulekile yokuqonda ukuziphatha kokufuduka kwezingane.
Umfanekiso: Ukuqhathaniswa kwamaphethini endiza phakathi kwama-whimbrel ase-Eurasian abantu abadala kanye nentsha. Iphaneli a. ama-whimbrels abantu abadala, iphaneli b. Intsha.
Isikhathi sokuthumela: Dec-06-2024
