I-Little Goose Goose (Branta hutchinsii) ingeka-oda i-Anseriformes.
Izimpawu zangaphandle zehansi elincane laseCanada
I-Goose Goose Encane inesayizi lomzimba cishe elingama-76 cm.
Iphiko lempiko: 109 - 119 cm.
Isisindo sezinyoni sifinyelela ku-950 - 3000 amagremu.
Ngokubukeka ifana kakhulu nehansi laseCanada, ngakho-ke livame ukubizwa ngokuthi "ihansi elincane laseCanada". Ngaphambilini, ihansi laseCanada lalithathwa njengezinhlobo ezincane zehansi laseCanada.
Uma ubeka zombili izinyoni zezinhlobo ezahlukahlukene, bese kuthi ngesisekelo somqondo esilula sesisindo somzimba, kunzima kakhulu ukuzihlukanisa komunye nomunye, ngoba amahansi amakhulu aseCanada kanye namahansi amancane kakhulu aseCanada anesisindo esilinganayo, esingaphezu kwamakhilogremu amathathu. Kodwa-ke, ezimweni eziningi, amahansi aseCanada ayizinyoni ezinkulu kakhulu, angafinyelela ku-6.8 kg. Lapho indiza, i-Lesser Goose ingahlukaniswa ngentamo yayo emfushane kakhulu. Isimo sokuziphatha sikuvumela ukuthi uhlukanise amahansi aseCanada ngezingcingo ezinomsindo.
Kuhansi elincane laseCanada, intamo nekhanda kumnyama.
Ingaphansi lekhanda liwelelwa yiteyiphu emhlophe ebanzi egijima kusuka ekuvuleni kwendlebe iye kolunye uvuko. Izimpaphe zomzimba ngocezwana olunsundu ngokubomvu. Ama-paw amnyama. Umsila umnyama, uhluke kakhulu ngombala nesigaxa, lapho kugijima khona umugqa obanzi onqamulelayo. Uqhwaku lufushane futhi lumile ngendlela ehlukile kunaleyo ihansi laseCanada. Ikhola emhlophe emincane ihlobisa isisekelo sentamo bese yehlela ngezansi.
Izindawo Zokuhlala Kwe-Goose yaseCanada Encane
I-Little Goose ihlala ezindaweni ezahlukahlukene ngesikhathi sokuzala, ikakhulukazi e-tundra, cishe njalo eduze kwamanzi. Ihlala emadlelweni, emibhedeni yomhlanga noma ezindaweni lapho kukhula khona izihlahla ezincane nezihlahla ezinamajikijolo, kungukudla okuyinhloko kwezinyoni ezindala kanye ne-nidifier.
Ebusika nangesikhathi sokufuduka, ihansi elincane laseCanada likhetha imizimba yamanzi maphakathi nezwe: amachibi, imifula namaxhaphozi. Ezifundeni ezingasogwini, lezi zinhlobo zezinyoni zingatholakala ezindaweni ezinamanzi ezigcwele amanzi olwandle, amatheku nezindawo ezinodaka endaweni enamanzi, amachibi anamanzi amunyu, indawo enotshani nomhlaba olimekayo. Ngalesi sikhathi, amahansi amancane aseCanada nawo angabonakala otshanini obunotshani emadolobheni nasemadolobhaneni, kepha njalo eduze kwamanzi.
Ukusatshalaliswa kwehansi encane
Isidleke samahansi aseBrent enyakatho nasenkabeni yeCanada naseAlaska. Ngaphesheya kweBering Strait, kwake kwaba yinto evamile eNhlonhlweni YaseKamtchaka, empumalanga yeSiberia, enyakatho yeChina naseJapane. Ebusika, izinyoni zindiza ziye ezindaweni ezinesimo sezulu esibi, ziye e-United States (Texas) naseMexico.
I-Goose Goose yakha ama-subspecies amahlanu, ahluke kakhulu ngosayizi womzimba nesisindo. Umbala wezimpaphe awuyona indinganiso eyinhloko yokunquma ama-subspecies.
- B. h. hutchinsii uhlala enyakatho, maphakathi neCanada, eGreenland, isisindo esiphakathi - 2.27 kg, ubusika eTexas nasenyakatho neMexico.
- B. leucopareia itholakala e-Aleutian Islands, inesisindo esingu-2.27 kg, ubusika eCentral California.
- B. minima - entshonalanga ye-Alaska, isisindo - 1.59 kg, ubusika eCalifornia kuze kufike eningizimu yeMexico.
- B. taverneri ihlala enyakatho-mpumalanga ye-Alaska, enyakatho yeCanada, ifudukela eningizimu-ntshonalanga ye-United States naseMexico.
- B. I-Asiatica mhlawumbe ihlala eSiberia ngakolunye uhlangothi lweBering Strait, kodwa ukuba khona kwalezi zinhlobo ezincane kuyangabazeka.
Okukhethekile kokuziphatha kwehansi elincane laseCanada
Ngesikhathi sokufuduka nasebusika, amahansi amancane aseCanada ayizinyoni ezithandanayo. Abantu nemindeni babe sebakha ukuhlangana okukhulu ngokwanele kanye namahansi aseCanada. Njengoba isikhathi sokuzalela sisondela, i-Brent Geese ivikela ngolaka indawo yayo futhi ikhombisa ukuziphatha okunolaka.
Lezi zinhlobo ziyafuduka, imivimbo yabantu abafudukayo iqukethe imindeni nabantu ngabanye. Ngesikhathi sendiza, umhlambi uhamba ngokugoba okumise okwe-V futhi, njengomthetho, uhlala endaweni ephansi phakathi kwamamitha angama-300 nayi-1000. Izindiza zenzeka kusihlwa futhi ziqhubeka amahora amaningi ngaphandle kokuphazamiseka. Ijubane elijwayelekile lokuhamba ngamakhilomitha angama-50 ngehora.
Ukuzaliswa Kwehansi Elincane
Amahansi eBrent afinyelela ekuvuthweni ngokocansi ngonyaka wesibili. Bajwayele ukuba bodwa futhi bakhe imibhangqwana eshadile yesikhathi eside. Noma kunjalo, uma inyoni eyodwa ifa, lowo wesibili uthola umlingani omusha. Ukuzalela isidleke samahansi endaweni ehlala njalo. Owesifazane ukhetha isiza endaweni ephakeme, enikeza ukubuka konke okuhle ngaphakathi echibini noma emfuleni. Kwesinye isikhathi isidleke sitholakala esiqhingini esincane maphakathi nomfula. Omunye wama-subspecies, ohlala eziqhingini zase-Aleutian, udleke ezihlahleni ezisegqumeni noma eweni.
Izidleke ezindala zivame ukusetshenziswa futhi.
Isidleke sakhiwa yi-moss, lichen, sedge futhi ihlotshiswe ngezimpaphe. Kukhona amaqanda ama-4 noma ama-5 ku-clutch, lapho kuhlala khona abesifazane kuphela izinsuku eziyi-11-14. Ngalesi sikhathi, amadoda aqapha i-clutch. Amachwane ashiya isidleke ngemuva kwamahora angama-24, vele kule minyaka ayakwazi ukuzihambela, ukubhukuda, ukuntywila nokuzondla. Ngemuva kwamasonto ayisithupha kuya kwayi-6, bazimela ngokuphelele bese beshiya itheku. Kodwa-ke, amahansi amancane ahlala eqenjini lomndeni ebusika bokuqala.
Ukondla uGogo omncane
Ehlobo elisendaweni ye-tundra, amahansi amancane aseCanada adla kakhulu ekudleni kwezitshalo: utshani, umhlanga namajikijolo. Ngaphambi nje kokufuduka, zidla kakhulu imbewu yomhlanga ukuze zithole ungqimba oluningi lwamafutha, oluwumthombo wamandla phakathi nezindiza ezinde.
Amahansi eBrent akhipha ukudla emanzini, acwilisa ikhanda nentamo yawo ukuze afinyelele ezitshalweni ezifunwayo.
Ebusika, izinyoni ziyama emasimini lapho zidla khona ukolweni wasebusika nebhali. Ziphinde zidle izinambuzane, ama-crustaceans, nama-molluscs.
Isimo sokulondolozwa kweGoose Goose
I-Lesser Goose, njengeCanada Geese, ingenye yama-Anseriformes asakazeke kakhulu ezwenikazi laseNyakatho Melika. Abaqaphi bezinyoni banenkinga enkulu yokuhlonza izinhlobo ezingaphansi komhlaba ukuze babone izinhlobo ezingaphansi komhlaba ezisengozini enkulu ezinsongweni ezahlukahlukene. I-Little Goose izwela kakhulu ekungcolisweni kwemvelo ngamakhemikhali okuhola kanye ne-pesticides. Le nhlobo ingaphansi kwengcindezi evela kubazingeli. Ukuxhashazwa kwezinsimu zegesi no-oyela e-Arctic kuholela ekubhujisweni kwendawo, okwenza kube nobungozi obuthile bokuba khona kwamahansi amancane aseCanada kule tundra.
I-B. leucopareia subspecies ehlala eziQhingini zase-Aleutian ivikeleke ngokuphelele, kepha ubunzima bokukhomba izinyoni zale nhlobo ethile yabazingeli buholela ekuqothulweni okungafuneki kwezinyoni.
https://www.youtube.com/watch?v=PAn-cSD16H0
