Bakha waku Australia (Aythya australis) ndi wa banja la bakha, ndi amtundu wa Anseriformes.
Mverani mawu a gulu lachiwawa ku Australia.
Zizindikiro zakunja kwa nkhumba zaku Australia.
Bakha wa ku Australia amakhala ndi pafupifupi masentimita 49, mapiko ake ndi ochokera masentimita 65 mpaka 70. Kulemera kwake: 900 - 1100 g. Mlomo wamphongo ndi wa 38 - 43 mm kutalika, ndipo wamkazi ndi wa 36 - 41 mm kutalika.
Bakha uyu - wosinthana nthawi zina amatchedwa ndi anthu am'deralo "bakha wokhala ndi maso oyera". Izi ndizofunikira pakuzindikiritsa mitundu. Nthenga zaimuna zimafanana ndi utoto wophimba nthenga za mitundu ina ya abakha, koma mzere wa bakha waku Australia wochokera pakamwa umamveka bwino. Nthenga zake ndizofiirira kuposa mitundu yofananira.
Nthenga pamutu, m'khosi ndi thupi zimakhala zofiirira. Mbali zake ndi zofiirira, kumbuyo ndi mchira ndi zakuda, zosiyana ndi mchira ndi nthenga zapakati, zomwe ndi zoyera. Pansi pa mapikowo pali zoyera ndi malire ofiira abulauni.
Ndalamayi ndi imvi yakuda ndi mzere wowonekera wotuwa wabuluu. Mawondo ndi miyendo ndi zotuwa, misomali yakuda. Ndalamayi ndiyotakata, yaifupi, yophwatalala, ikukulira pang'ono kukwera pamwamba ndikusiyanitsidwa ndi marigold wopapatiza. Pa chisoti chachifumu pali nthenga zazitali, zomwe zimakwezedwa ngati mawonekedwe olimba. Mu drake wamkulu, malowa ndi 3 cm kutalika, mwa mkazi wachikulire ndi wamfupi. Mbalame zazing'ono sizimanga zoluka. Pali nthenga khumi ndi zinayi za mchira.
Mtundu wa nthenga mwa mkazi ndi wofanana ndi wamwamuna, koma wa utoto wambiri wofiirira wokhala ndi pakhosi lotumbululuka. Iris wa diso. Mzere pamlomo uli pafupi. Mkaziyo ndi wocheperako poyerekeza ndi mnzake. Pakhoza kukhala kusiyanasiyana kwakanthawi kwamitundu yamitengo kwakanthawi kochepa. Abakha achichepere amakhala achikuda ngati achikazi, koma owala, achikasu-bulauni, m'mimba muli mdima, wamawangamawanga.
Malo okhala bakha waku Australia.
Bakha wa ku Australia amapezeka m'madzi akuya ndi malo akuluakulu, ndi madzi ozizira. Bakha amathanso kuwoneka m'matumba okhala ndi zomera zambiri. Nthawi ndi nthawi amapita kumalo odyetserako ziweto ndi malo olimapo kuti adzidyetse okha.
Kunja kwa nyengo yoberekera, amapezeka m'mayiwe, malo osungira zimbudzi, madambo, madambo, madera a m'mphepete mwa nyanja zamchere, nkhalango zamatumba a mangrove komanso matupi amadzi amkati. Nthawi zambiri amapita kunyanja zamapiri mpaka 1,150 mita pamwamba pa nyanja, monga nyanja za East Timor.
Khalidwe la gulu lachiwawa ku Australia.
Bakha wa ku Australia ndi mbalame zomwe zimakonda kukhala m'magulu ang'onoang'ono, koma nthawi zina zimapanga gulu lalikulu la anthu nthawi yadzuwa.
Magulu awiriwa amapanga mwachangu kwambiri, kukwera kwamadzi kumapereka mpata woswana.
Ziwonetsero zamabakha aku Australia ndizosazolowereka chifukwa chakuchepa kwakukulu kwamvula.
Abakha amtundu uwu ndi amanyazi kwambiri komanso osamala kwambiri. Mosiyana ndi mitundu ina yokhudzana ndi mtunduwo, abakha aku Australia amatha kunyamuka mwachangu ndikuchoka mwachangu, zomwe ndi mwayi wofunikira pakawopsezedwa ndi adani: makoswe akuda, mbewa za hering'i, mbalame zodya nyama. Kuti apulumuke, abakha amafunika madzi okhala ndi madzi okwanira kuti adye mwa kulowa pansi pamadzi. Abakha amasambira, amakhala pansi pamadzi mokwanira, ndipo akamadumphira m'madzi, amangonyamulira kumtunda kumbuyo kwawo ndi mchira womata. Pamaso pa madzi osatha, abakha aku Australia amangokhala. Koma panthawi yachilala, amakakamizidwa kuyenda maulendo ataliatali, ndikusiya malo awo okhazikika. Kunja kwa nyengo yoswana, abakha aku Australia ndi mbalame zopanda phokoso. Mkati mwa nyengo ya kukwatira, yaimuna imatulutsa mluzu. Mkaziyo amasiyana ndi mnzake m'mawu amawu, amapera pang'ono ndikupereka chopanda pake champhamvu.
Chakudya cha bakha waku Australia.
Abakha aku Australia amadya makamaka pazakudya zamasamba. Amadya mbewu, maluwa ndi mbali zina za zomera, ma sedges ndi udzu wapafupi ndi madzi. Bakha amadya zopanda mafupa, molluscs, crustaceans, tizilombo. Amagwira nsomba zazing'ono. M'chigawo cha Victoria kum'mwera chakum'mawa kwa Australia, abakha aku Australia amathera 15% ya nthawi yawo akudya chakudya ndipo pafupifupi 43% amapuma. Zambiri mwazinyama, 95%, zimapezeka ndikutuluka m'madzi ndipo 5% yokha ya chakudya imasonkhanitsidwa pamwamba pamadzi.
Kubalana ndi kukaikira mazira bakha waku Australia.
Nthawi yoswana imamangirizidwa ku nyengo yamvula. Nthawi zambiri zimachitika mu Okutobala-Disembala kumwera chakum'mawa, ndi Seputembara-Disembala ku New South Wales. Bakha amapanga awiriawiri okhazikika. Komabe, nthawi zina maanja amakhala kwa nyengo imodzi yokha kenako amatha, ndipo mitala imachitika.
Abakha a ku Australia amakhala okhaokha m'madambo omwe amadzaza ndi mabango ndi ma sedges.
Chisa chimakhala m'mphepete mwa dziwe kapena pachilumba chobisika bwino muudzu wandiweyani. Amamangidwa kuchokera kuzomera zam'madzi kapena zam'madzi. Zikuwoneka ngati nsanja yokutidwa yolumikizidwa pansi.
Clutch imakhala ndi mazira oyera 9 - 13 oyera. Nthawi zina, chisa chimakhala ndi mazira opitilira 18, omwe amawoneka chifukwa chazinyalala zomwe zimayikidwa ndi abakha ena. Mazirawo ndi akulu, pafupifupi 5 - 6 cm ndipo amalemera pafupifupi 50 magalamu. Amayi okhaokha amakola masiku 25 mpaka 27. Anapiye amawoneka, atakutidwa ndi kuwala pansi pamtundu wakuda wakuda komanso pansi pake pali chikasu chachikaso, kamvekedwe kosiyanasiyana kutsogolo kwa thupi. Amakula mofulumira, akulemera kuchokera 21 mpaka 40 magalamu. Abakha achikulire amaswana mpaka kalekale. Palibe ziwerengero zakutali kwa abakha akulu.
Kufalikira kwa chipwirikiti cha ku Australia.
Bakha waku Australia amapezeka kudera lakumwera chakumadzulo (Murray-Darling Basin) kum'mawa kwa Australia ndi Tasmania. Mitundu ina ya bakha yakutali imakhala m'mphepete mwa nyanja ya Vanuatu. Mwinamwake chisa ku East Timor.
Kuteteza kwa nkhumba zaku Australia.
Nkhumba zaku Australia sizikukumana ndi chiwopsezo chilichonse pamanambala awo. Ngakhale panali kuchepa kwa abakha m'zaka za zana la makumi awiri, kuyambira chiyambi cha zaka zana zatsopano, zoopseza zazikuluzikulu zatha, chiwerengerocho chimakhala chokhazikika komanso chimayambira 200,000 mpaka 700,000. Bakha wokwera kwambiri ku Australia amapezeka kuzungulira nyanja kumadzulo komanso pakati pa Queensland. Ku Australia, bakha wofunikira kwambiri amapezeka mozungulira nyanja nthawi yamvula. Mandora Swamp ku South Australia ndi malo omwe abakha amasonkhana pomwe kulibe mvula. Kuchuluka kwa mbalame ku Tasmania ndikotsimikizika. Kunja kwa Australia ku New Zealand ndi New Guinea, kugawidwa kwa bakha waku Australia ndikochepa. Pali chiwopsezo cha kusintha kwa malo okhala chifukwa cha ngalande zamadambo m'malo oberekera bakha waku Australia.
