Mary Allen
Abakha ndi mbalame. Atsekwe ndi swans. Monga izi, nthawi zambiri amakhala pafupi ndi madzi, mwachitsanzo, nyanja. Chochititsa chidwi ndi abakha ndi milomo yawo yayikulu. Bakha wamphongo amatchedwa drake, nthawi zinanso drake. Yaikazi ndi bakha chabe.
Abakha ochita masewerawa amafunafuna chakudya chawo m’madzi, omwe amatchedwa magudgeons. Amafufuza pansi pamatope kuti apeze tizilombo ta m'madzi, nkhanu kapena zotsalira za zomera. Amayamwa m'madzi ndi mlomo wotseguka ndikutulutsa ndi mlomo wotseguka. M'mphepete mwa mlomo, lamellae amachita ngati fyuluta. Lamellae ndi mbale zopapatiza, zopyapyala zomwe zimayima motsatana.
Koma abakha othawira pansi amamira pansi. Iwo amakhala pamenepo kwa theka la miniti mpaka miniti yathunthu. Amapanga kuya kwa mita imodzi kapena itatu. Amadyanso nkhanu ndi zinyalala za zomera, komanso moluska monga nkhono kapena sikwidi ting’onoting’ono.
Kodi abakha amaswana bwanji?
Nthawi yoswana, abakha amakhala awiriawiri. Komabe, awiriwa samakhala m'magulu, koma payekha. Yaikazi nthawi zambiri imamanga chisa. Amagwiritsa ntchito nthambi ndi zipangizo zofanana. Pomalizira pake, imang’amba nthenga m’mimba mwake n’kuigwiritsa ntchito kugwetsa chisacho. Izi zimapangitsa kuti khungu lake likhale lopanda kanthu lotchedwa "brood spot".
Ma drakes samaswana. Nthawi zambiri zimakhala ndi mitundu yambiri ya nthenga zawo, zazikazi nthawi zambiri zimakhala zotuwa kapena zofiirira, kotero kuti adani sangazipeze mosavuta poswana. Zambiri zimatengera mtundu wa bakha womwe mukunena. Mwachitsanzo, mallard amakhala ndi clutch imodzi pachaka. Amanyamula mazira 7-16 pamimba pake nthawi imodzi. Mazira a bakha ndi okulirapo pang'ono kuposa mazira a nkhuku. Yolk ndi yaikulu, koma ili ndi albumen yochepa.
Bakha amakhala pa mazira kotero kuti anagona ndendende pansi pa ana. Chifukwa amakhudza khungu mwachindunji, amakhala ndi kutentha. Patapita pafupifupi milungu inayi, anapiyewo amayamba kuswa.
Abakha amatha kuchoka pachisa chawo patatha maola angapo. Ndicho chifukwa chake amatchedwa "zolusa". Pakatha pafupifupi miyezi iwiri amatha kuwuluka. Koma amakhala ndi abale awo ndi mayi awo kwa miyezi ina iwiri. Gulu lotere limatchedwa "Schoof".
Anapiye ali ndi adani ambiri, kuphatikizapo akalulu, nkhandwe, akalulu, martens, makoswe, agalu, ndi amphaka. Ziwombankhanga za m’mlengalenga ndi nkhanu, khwangwala, mbalamezi, ziwombankhanga zosiyanasiyana, kadzidzi, ndi kadzidzi. Mbatata, pike, ndi nsomba zina zimaukira anawo ali m’madzi. Choncho, kuchokera ku nyama zambiri zazing'ono, ndi zochepa chabe zomwe zimatsalira.
N’chifukwa chiyani anthu amaweta abakha?
Anthu ambiri amakonda abakha chifukwa amawaona okongola ndipo amakonda kuwawona m'paki. N’chifukwa chake masiku ano tili ndi mitundu yambiri ya bakha imene inachokera kumayiko ena. Chitsanzo ndi bakha wa Mandarin, amene kwenikweni amachokera ku East Asia.
Komabe, mofanana ndi mbalame zina, abakha nawonso amasungidwa kuti adye nyama kapena mazira awo. Kuti achite izi, anthu adatenga abakha a mallard ndikuweta ziweto kuchokera kwa iwo. Zimenezi zinachitika zaka pafupifupi 3,000 zapitazo.
Koposa zonse, abakha amaŵetedwa nthenga zawo. Bakha pansi ndi chisankho chodziwika bwino choyika ma pilo. Nthenga za bakha zinkagwiritsidwa ntchito polemba kapena popanga mivi kuti ziulukire kutsogolo.