Idada laseNew Zealand (Aythya novaeseelandiae) lingelomndeni wedada, i-Anseriformes oda. Eyaziwa njenge-Black Teal noma iPapango, leli dada liyidada lokuntywila elimnyama eligcwele iNew Zealand.
Izimpawu zangaphandle zedada laseNew Zealand
Idada laseNew Zealand likala cishe amasentimitha angama-40 - 46. Isisindo: 550 - 746 amagremu.
Yidada elincane elimnyama bhuqe. Owesilisa nowesifazane batholakala kalula endaweni yokuhlala, abanaso isimomondiya sezocansi. Kweduna, emuva, entanyeni nasekhanda kumnyama ngokukhazimula, kuyilapho izinhlangothi zimnyama ngokukhanyayo. Isisu sinsundu. Amehlo ahlukaniswa iris ophuzi ophuzi. Uqhwaku aluhlaza okwesibhakabhaka, omnyama ekugcineni. Uqhwaku lwensikazi luyafana nolwesilisa, kepha yehlukile kulo uma ingekho indawo emnyama, limnyama bhuqe ngombala, njengokujwayelekile, linomugqa omile mpo ngasisekelo. Iris inombala onsundu. Izimpaphe ezingaphansi komzimba zikhanyiswe kancane.
Amachwane embozwe onsundu phansi. Umzimba ophezulu ulula, intamo nobuso bunombala onsundu ngokumpunga. Uqhwaku, imilenze, iris zimnyama mpunga. Ukwehliswa kwezidladla kumnyama. Amadada amancane ayafana ezimpapheni nakwabesifazane, kodwa awunawo amamaki amhlophe ezansi koqhwaku olumnyama olumnyama. Idada laseNew Zealand luhlobo lwe-monotypic.
Ukusabalala kwezingulube zaseNew Zealand
Idada laseNew Zealand lisakazeka eNew Zealand.
Izindawo zedada laseNew Zealand
Njengezinhlobo eziningi ezihlobene, idada laseNew Zealand litholakala emachibini anamanzi angenasawoti, ajulile impela, angokwemvelo nawokuzenzela. Kukhethwa amadamu amakhulu anamanzi ahlanzekile, amachibi aphakeme emuva kanye nezinqolobane zezitshalo zamandla kagesi ophehlwa ngamanzi ezifundeni eziphakathi noma ezingaphansi kolwandle kude nogu.
Uncamela ukuhlala emzimbeni wamanzi unomphela, asendaweni ephakeme ngamamitha ayinkulungwane ngaphezu kogu lolwandle, kodwa futhi kwenzeka nasemachibini athile, emfuleni i-deltas nasemachibini asogwini, ikakhulukazi ebusika. Idada laseNew Zealand likhetha izindawo ezinezintaba kanye nedlelo laseNew Zealand.
Izici zokuziphatha kwezingulube zaseNew Zealand
Amantshontsho amadada aseNew Zealand achitha isikhathi esiningi esemanzini, kuphela ngezikhathi ezithile kuphela aphumela ogwini. Kodwa-ke, ukuhlala emhlabathini akuyona indlela ebalulekile emadakhi. Amadada aseNew Zealand ahlala phansi futhi awafuduki. La madada ahlala njalo onqenqemeni lwamanzi eduze kwe-sedge, noma aphumule ngemihlambi emanzini kude nebanga lolwandle.
Banobudlelwano bezenhlalo obuthuthuke kahle, ngakho-ke bavame ukuhlangana ngababili noma ngamaqembu abantu aba-4 noma aba-5.
Ebusika, amaDada aseNew Zealand ayingxenye yemihlambi exubile kanye nezinye izinhlobo zezinyoni, kanti amadada azizwa ekhululekile eqenjini elixubekile.
Ukundiza kwala madada akuqine kakhulu, ngokungabazeki akhuphukela emoyeni, abambelele ebusweni bamanzi ngezidladla zawo. Ngemuva kokundiza, zindiza endaweni ephakeme, zifafaza amanzi. Endizeni, akhombisa umugqa omhlophe phezu kwamaphiko awo obonakalayo futhi uvumela ukuhlonza izinhlobo, ngenkathi ngaphansi kwawo kumhlophe qwa.
Ithuluzi elibalulekile lokubhukuda emanzini izinyawo nemilenze ebanzi esakazekile iphonswe emuva. Lezi zici zenza amadada aseNew Zealand abe ngabatshuzi abahlukahlukene nababhukudi, kepha amadada ahamba kabi emhlabeni.
Bangena ekujuleni okungenani kwamamitha ama-3 lapho bedla futhi kungenzeka bafinyelele ekujuleni okujulile. Ama-dives ajwayele ukuhlala imizuzwana engu-15 kuya kwengu-20, kodwa izinyoni zingahlala ngaphansi kwamanzi kuze kube umzuzu owodwa. Lapho befuna ukudla, bayaphenduka futhi bazigaxe emanzini angajulile. Izinyoni zedada laseNew Zealand azithuleli ngaphandle kwenkathi yokukhwelana. Abesilisa bakhipha impempe ephansi.
Umsoco wedada waseNew Zealand
Njengama-fuligule amaningi, amadada aseNew Zealand ayacwila efuna ukudla, kepha ezinye izinambuzane zingabanjwa ebusweni bamanzi. Ukudla kuqukethe:
- ama-invertebrate (ama-molluscs nezinambuzane);
- tshala ukudla okutholwa amadada ngaphansi kwamanzi.
Ukuzala nokufukamela idada laseNew Zealand
Amabili ngamadada aseNew Zealand akha ekuqaleni kwentwasahlobo eningizimu yezwe, imvamisa ngasekupheleni kukaSeptemba noma ekuqaleni kukaNovemba. Kwesinye isikhathi inkathi yokuzalanisa ingahlala kuze kube uFebhuwari. Amadada abonwa ngoDisemba. Amadada esidlekeni ngababili noma akha amakoloni amancane.
Ngenkathi yokuzalanisa, ngazimbili kuyadedelwa emhlambini ngoSepthemba, kuthi ezeduna zibe yindawo. Ngesikhathi sokuqomisana, owesilisa uthatha ukuboniswa, ngekhono, ephonsa ikhanda lakhe emuva ngomlomo ophakanyisiwe. Bese esondela kowesifazane, ashaye ikhwela kancane.
Izidleke zitholakala ezimileni eziminyene, ngenhla nje kwezinga lamanzi, imvamisa zisondele kakhulu kwezinye izidleke. Zakhiwe ngotshani, amaqabunga omhlanga futhi zifakwe phansi zihluthulwe emzimbeni wedada.
I-Oviposition yenzeka kusukela ngasekupheleni kuka-Okthoba kuya kuDisemba, futhi kwesinye isikhathi ngisho nangemva kwesikhathi, ikakhulukazi uma i-clutch yokuqala ilahlekile, okwesibili kungenzeka ngoFebhuwari. Inani lamaqanda libonwa lisuka ku-2 - 4, lingaphansi kaningi lifike ku-8. Kwesinye isikhathi esidlekeni esisodwa kuba khona kuze kufike ku-15, kepha ngokusobala abekwa ngamanye amadada. Amaqanda acebile, ukhilimu omnyama ngombala futhi makhulu impela enyoni encane kangako.
Ukufukamela kuhlala izinsuku ezingama-28 - 30, kwenziwa kuphela ngabesifazane.
Lapho amaphuphu evela, insikazi ibaholela emanzini njalo emva kosuku. Zinesisindo esingu-40 grams kuphela. Eyeduna igcina iseduze kwedada elifukamela futhi ngokuhamba kwesikhathi iphinde iholele amadada.
Amantshontsho amadada ayizinkukhu ezinhlobo futhi angatshuza abhukude. Owesifazane kuphela ohola izingane. Amadada amancane awahambi kuze kube izinyanga ezimbili, noma izinyanga ezimbili nengxenye.
Isimo sokulondolozwa kwedada laseNew Zealand
Idada laseNew Zealand lahlupheka kakhulu emashumini okuqala eminyaka yeshumi lamashumi amabili ngenxa yokuzingelwa okuzingelayo, ngenxa yalokho lolu hlobo lwamadada lwashabalala cishe kuzo zonke izifunda eziphansi. Kusukela ngo-1934, idada laseNew Zealand lalikhishwa ohlwini lwezinyoni ezinyamazana, ngakho-ke, lasakazeka masinyane emachibini amaningi adalwe eSouth Island.
Namuhla inani ledada laseNew Zealand lilinganiselwa kubantu abadala abangaphansi kwezinkulungwane eziyishumi. Imizamo ephindaphindiwe yokuhambisa (ukuphindisela kabusha) amadada eNyakatho yesiqhingi saseNew Zealand ikhombisile ukuthi iyasebenza. Njengamanje, lezi zindawo zihlala abantu abambalwa abancane, izinombolo zazo ezingakutholi ukuguquguquka okukhulu. Idada laseNew Zealand lingelenhlobo enezinsongo ezimbalwa ebukhoneni bezinhlobo.
