I-Hooded merganser (eyaziwa nangokuthi i-crested merganser, i-Latin Mergellus cucullatus) ingeyomndeni wedada, i-anseriformes oda.
Izimpawu zangaphandle ze-hood merganser.
I-merganser enekhanda inesayizi lomzimba cishe ngama-50 cm, amaphiko: kusuka ku-56 kuye kuma-70 cm.Isisindo: 453 - 879 g.I-merganser enekhanda ingummeleli omncane kakhulu we-merganser eNyakatho Melika, icishe ilingane nedada likaCaroline. Izimpaphe zowesilisa ziyinhlanganisela emangalisayo yobomvu obumnyama, obumhlophe kanye nsundu. Insiba yekhanda, intamo nomzimba zimnyama, isigaxa simpunga. Umsila umpunga onsundu ngokunsundu. Umphimbo, isifuba nesisu kumhlophe.
Imivimbo emibili enemiphetho emnyama ejiyile imaka izinhlangothi zembambo. Izinhlangothi zinombala onsundu noma onsundu ngokubomvu. Kweduna, okuphawuleka kakhulu izimpaphe ze-occiput, okuthi, lapho zembuleka, zikhombise inhlanganisela emangalisayo yengubo emhlophe nomnyama.
Lapho owesilisa ephumule, bonke ubuhle bancishiselwa emgqeni olula futhi obanzi omhlophe ngemuva kweso. Izinsikazi nezinyoni ezincane cishe ziyafana. Banemibala enombala omnyama: onsundu ngokumpunga noma onsundu. Intamo, isifuba nezinhlangothi zimpunga, ikhanda limnyama nsundu. Ikama lowesifazane linsundu ngemithunzi yesinamoni, futhi kwesinye isikhathi kunamathiphu amhlophe. Wonke amadada amancane nawo anophaphe olufanayo "ikama", kodwa lincane. Abesilisa abasebasha abanaso isidumbu.
Lalela izwi le-merganser enekhanda.
Ukusabalala kwe-hood merganser.
Ama-mergansers afakwe endlini asatshalaliswa kuphela eNyakatho Melika. Ngesinye isikhathi, babekhona kulo lonke izwekazi, kubandakanya nasezintabeni ezindaweni ezifanele. Njengamanje, la madada atholakala ikakhulukazi esifundeni iGreat Lakes eCanada, kanye nasemaphethelweni oLwandlekazi iPacific ezifundazweni zaseWashington, Oregon naseBritish Columbia. I-Heded merganser iyinhlobo ye-monotypic.
Izindawo zokuhlala ze-hood merganser.
Ama-mergansers afakwe izindlu akhetha izindawo ezifanayo nezamadada kaCaroline. Bakhetha amadamu ngamanzi azolile, angajulile futhi acacile, phansi, enesihlabathi noma ngetshe.
Njengomthetho, ama-mergansers afakwe izigqoko ahlala emadamini atholakala eduze kwamahlathi ashubile: imifula, amachibi amancane, amahlathi, amadamu eduze kwezigayo, amaxhaphozi noma amadaka amakhulu akhiwa emadamini e-beaver.
Kodwa-ke, ngokungafani no-carolin, ama-mergansers afakwe izigqoko kunzima ukuthola ukudla ezindaweni lapho kugeleza khona imisinga enesiphithiphithi futhi ifune amanzi azolile ngomsinga onensayo. Amadada atholakala nasemachibini amakhulu.
Ukuziphatha kwe-hoodie merganser.
Ama-mergansers afakwe endlini afuduka ekwindla sekwedlule isikhathi. Zihamba zodwa, ngambili, noma ngemihlambi emincane emabangeni amafushane. Iningi labantu abahlala engxenyeni esenyakatho yebanga bandizela ngaseningizimu, beqonde ezifundeni ezisogwini zaleli zwekazi, lapho bahlala emizimbeni yamanzi. Zonke izinyoni ezihlala ezifundeni ezipholile zihlala phansi. Ama-mergansers afakwe ezindlini andiza ngokushesha nangaphansi.
Ngesikhathi sokudla, bacwilisa emanzini bese bethola ukudla ngaphansi kwamanzi. Izidladla zazo zihlehliselwa emuva ngasemuva komzimba, njengamadada amaningi okuntywila njenge-mallard. Lesi sici sibenza babe nobunzima emhlabeni, kepha emanzini abanazo izimbangi kubuciko bokudilika nokubhukuda. Ngisho namehlo aguqulelwe ukubona ngaphansi kwamanzi.
Ukudla okunomsoco we-hood merganser.
Abakwa-Mergansers abane-Hooded banokudla okuhlukahlukene kakhulu kunamanye ama-harles amaningi. Zidla izinhlanzi ezincane, onoshobishobi, amaxoxo, kanye nezingenamgogodla: izinambuzane, ama-crustaceans amancane, iminenke namanye ama-molluscs. Idada futhi lisebenzisa imbewu yezitshalo zasemanzini.
Ukukhiqizwa kabusha nokufakwa esidlekeni kwe-merganser enekhanda.
Ngenkathi yokuzalanisa, ama-mergansers afakwe izigqoko afika ngababili asebevele bafana, kepha ezinye izinyoni ziqala umkhuba wokuqomisana futhi zikhetha umlingani. Usuku lokufika kwabafuduki luyahlukahluka ngesifunda nobubanzi. Kodwa-ke, amadada afika kusenesikhathi futhi avele ezindaweni zokwakha izidleke lapho iqhwa lincibilika ngoFebhuwari eMissouri, ngasekupheleni kukaMashi eGreat Lakes, maphakathi no-Ephreli ngasekupheleni kweBritish Columbia. Insikazi imvamisa ibuyela lapho yayidleke khona eminyakeni eyedlule, lokhu akusho ukuthi iyayikhetha njalo. Ama-mergansers afakwe ezinhlotsheni ayizinhlobo zamadada ezizodwa, futhi azala ngemuva kweminyaka emi-2. Ngenkathi yokukhwelana, izinyoni zihlangana ngamaqembu amancane, lapho kukhona khona eyodwa noma ezimbili zensikazi kanye neziduna eziningana. Owesilisa uphendula umlomo wakhe, azulise ikhanda lakhe ngamandla, akhombise ukunyakaza okuhlukahlukene. Imvamisa athule, wenza izingcingo ezifana kakhulu "nokucula" kweselesele, bese enqekuzisa ikhanda ngokushesha. Ibuye ibe nezindiza ezimfushane zokubonisa.
Ama-mergansers asendlini afakwa esidlekeni semigodi yezihlahla ephakathi kwamamitha amathathu kuya kwayisithupha ngaphezulu komhlaba. Izinyoni azikhethi izimbotshana zemvelo kuphela, zingakha isidleke ezindlini zezinyoni. Owesifazane ukhetha isayithi eliseduze kwamanzi. Akaqoqi noma yini eyengeziwe yokwakha, kepha umane asebenzise umgodi, alinganise phansi ngomlomo wakhe. Izimpaphe ezisuswe esiswini zisebenza njengolwelwesi. Ama-mergansers afakwe ama-hooded ayabekezelela ubukhona bamanye amadada aseduze, futhi kaningi amaqanda olunye uhlobo lwedada avela esidlekeni se-merganser.
Imvamisa inani elijwayelekile lamaqanda ku-clutch liba yi-10, kepha lingahluka lisuke ku-5 liye ku-13. Lo mehluko enombolweni uncike kubudala bedada nezimo zezulu.
Okudala insikazi, lapho kuqala iklatshi kwenzeka, inani elikhulu lamaqanda liyanda. Amaqanda embozwe ungqimba lwe-fluff. Uma insikazi isaba ngesikhathi sokufukamela, iyashiya isidleke. Isikhathi sokufukamela sithatha ukusuka ezinsukwini ezingama-32 kuye kwezingama-33.
Ngemuva kokuthi idada liqale ukuchanyuselwa, iduna liyashiya endaweni yokwakha isidleke futhi aliveli kuze kube sekupheleni kwesikhathi sokuzala. Lapho kuvela umhlaseli, insikazi izenza sengathi ilimele bese iwela ephikweni ukuze isuse lowo ongenayo esidlekeni. Amachwane avela embozwe phansi. Zihlala esidlekeni amahora angafika ema-24, bese ziyakwazi ukuzulazula zizondle zodwa. Insikazi ibiza amantshontsho ngemisindo ethambile yomphimbo futhi iholele ezindaweni ezicebile ezingenamgogodla nezinhlanzi. Amachwane angatshuza, kepha imizamo yokuqala yokuntywila emanzini ayihlali isikhathi eside, igxumela ekujuleni okujulile kuphela.
Ngemuva kwezinsuku ezingama-70, amadada amancane asevele endiza, insikazi ishiya amantshontsho ukuze iphakele ngokuqinile ukufuduka.
Izidleke zezinsikazi kanye ngesizini kanye nokuxhuma kabusha akuvamile. Uma amaqanda elahlekile nganoma yisiphi isizathu, kodwa owesilisa engakasuki endaweni yokwakha izidleke, khona-ke i-clutch yesibili ivela esidlekeni. Kodwa-ke, uma owesilisa esevele eshiye indawo yokwakha isidleke, insikazi isala ingenankukhu.
https://www.youtube.com/watch?v=ytgkFWNWZQA
