UMary Allen
Amadada ayizinyoni. Zihlobene namahansi namadada. Njengalezi, ngokuvamile zihlala eduze kwamanzi, isibonelo, ichibi. Okuhlaba umxhwele ngamadada uqhwaku lwawo olubanzi. Idada leduna libizwa ngokuthi i-drake, ngezinye izikhathi futhi i-drake. Insikazi imane iyidada.
Amadada adlalayo abheka ukudla kwawo emanzini, abizwa ngokuthi ama-gudgeon. Baphenya ngaphansi kodaka ukuze bathole izinambuzane zasemanzini, izinkalankala noma izinsalela zezitshalo. Bamunca amanzi ngoqhwaku oluvulekile futhi bawakhiphe ngoqhwaku oluvulekile. Emaphethelweni oqhwaku, i-lamellae yenza njengesihlungi. Ama-Lamellae amapuleti amancane, amancane ame ngokulandelana.
Ngakolunye uhlangothi, amadada atshuza atshuza ngaphansi. Bahlala lapho isigamu somzuzu kuya kumzuzu ogcwele. Benza ekujuleni kwemitha elilodwa kuya kwamathathu. Zibuye zidle izinkalankala kanye nemfucumfucu yezitshalo, kanye nama-mollusk afana neminenke noma ama-squid amancane.
Azala kanjani amadada?
Ngesikhathi sokuzala, amadada ahlala ngamabili. Kodwa-ke, ama-pair awahlali emakoloni, kodwa ngawodwana. Insikazi ivamise ukwakha isidleke. Isebenzisa amagatsha nezinto ezifanayo. Ekugcineni, iklebhula izimpaphe ezisesiswini sayo bese izisebenzisela ukuphekela isidleke. Lokhu kudala indawo engenalutho esikhumbeni sakhe ebizwa ngokuthi "i-brood spot."
Amadrake awazali. Zivame ukuba nemibala eminingi ezimpapheni zazo, ezinsikazi zivame ukuba mpunga noma zibe nsundu, ukuze izitha zingazitholi kalula lapho zizalana. Okuningi kuncike ekutheni yiluphi uhlobo lwedada okhuluma ngalo. I-mallard, isibonelo, ine-clutch eyodwa kuphela ngonyaka. Uthwala cishe amaqanda ayi-7-16 esiswini ngesikhathi. Amaqanda amadada makhudlwana kunamaqanda enkukhu. I-yolk inkulu, kodwa ine-albumen encane.
Idada lihlala phezu kwamaqanda ukuze alale ncamashi ngaphansi kwendawo yokuzala. Ngoba bese bethinta isikhumba ngqo, banokufudumala. Cishe ngemva kwamasonto amane, amatshwele aqala ukuchamusela.
Amadada angashiya isidleke sawo ngemva kwamahora ambalwa. Yingakho bebizwa ngokuthi “ama-predators”. Ngemva kwezinyanga ezimbili angakwazi ukundiza. Kodwa bahlala nezingane zakubo nonina ezinye izinyanga ezimbili. Iqembu elinjalo libizwa ngokuthi "Schoof".
Amadada anezitha eziningi, okuhlanganisa amabheja, izimpungushe, ama-hedgehog, ama-martens, amagundane, izinja namakati. Abahlaseli basemoyeni uklebe, igwababa, umkhozi, izinkozi ezihlukahlukene, uphokophele, kanye nesikhova sokhozi. Ama-otter, pike, nezinye izinhlanzi zihlasela amadada emanzini. Ngakho-ke, ezilwaneni eziningi ezincane ngokuvamile, kusele ezimbalwa kuphela.
Kungani abantu befuya amadada?
Abantu abaningi bayawathanda amadada ngoba bawathola emahle futhi bayathanda ukuwabona epaki. Yingakho namuhla sinezinhlobo eziningi zamadada ekuqaleni ezazivela kwamanye amazwe. Isibonelo idada le-mandarin, empeleni elidabuka eMpumalanga Asia.
Nokho, njengezinye izinyoni, amadada nawo afuywa ukuze adle inyama noma amaqanda awo. Ukwenza lokhu, abantu bathatha amadada ama-mallard futhi bafuywayo kuwo. Lokho kwenzeka eminyakeni engaba ngu-3,000 XNUMX edlule.
Ngaphezu kwakho konke, amadada afuyelwa izimpaphe zawo. I-Duck down iyisinqumo esithandwayo sokugxilisa imicamelo. Izimpaphe zamadada zazisetshenziselwa ukubhala noma imicibisholo ukuze indizele phambili.