I-nightjar engaqondakali futhi engabonakali kaningi ukuphela kwelungu lomndeni wezinyoni ongaqondakali. I-nightjar indizela ezindaweni zokwakha izidleke kusukela ekupheleni kuka-Ephreli, kepha kaningi ngoMeyi, uphawu lokuqala lokubuya ukucula okuhlabayo, okuculwa yindoda emagatsheni asendaweni yayo.
Ihlabelela kanjani i-nightjar
Ingxenye ngayinye yengoma inemizuzu emide ubude, inenqwaba yama-trill amafushane kepha asheshayo ahlala cishe isigamu somzuzwana. Inyoni ikhipha lezi trill ezimfushane lapho idonsa umoya. Lokhu kuchaza ukuthi ucula kanjani isikhathi eside ngaphandle kokuma. La mavesi aqukethe cishe amanothi angu-1 900 ngomzuzu, futhi ababheki bezinyoni bangahlukanisa izinyoni ngazinye ngokuhlaziya imvamisa yama-trill nobude bemishwana.
Sikumema ukuba ulalele izwi le-nightjar
Yiziphi izimbiza zobusuku ezidla emvelweni
Izinambuzane, ikakhulukazi amabhu namabhungane, zenza ingxenye enkulu yokudla kwe-nightjar, ngakho-ke lolu hlobo lwezinhlanzi ludla kakhulu entathakusa nasebusuku, lapho izinambuzane zisebenza kakhulu. Izimbiza zasebusuku ziyafana ngokubukeka kokhokho, futhi njengalezi zinyoni ezidla inyama, ziyakwazi ukujika ngokushesha emoyeni bese zitshuza.
Ama-nightjars anezindlela ezimbili eziyinhloko zokondla:
- "Trawling", lapho inyoni indiza iye ngapha nangapha, ibamba izinambuzane eziza endleleni;
- "Ukuhlaselwa", le nyoni ihlala egatsheni ilinde uvemvane noma ibhungane ukuba lidlule ngakulo.
Ama-Nightjars anemigqa emikhulu engajwayelekile, ebanzi emilonyeni yawo, lapho kuthi khona "ama-bristles" aqinile - cishe izimpaphe ezingenazo izimpaphe - akhula azungeze okusiza izinyoni ukubamba ngempumelelo inyamazane yazo.
Zibona kanjani izimbungulu zasebusuku, izici zombono
Zonke izinyoni zinamehlo abukhali, amehlo amakhulu atholakala ezinhlangothini zekhanda, okunikeza umbono omuhle nxazonke. Azikho izigaxa ku-retina, njengoba izinyoni zingadingi ukubona umbala futhi kunalokho zibe nezenduku zezinduku ezizwela ukunyakaza. Ingqimba yolwelwesi engemuva kwe-retina, ebizwa ngokuthi i-tapetum, ikhombisa ukukhanya okudlule kulezi zinduku ku-retina, okwenza amehlo e-nightjar abe nokuzwela okwengeziwe. Yilolu ungqimba olwenza amehlo enyoni akhanye ngaphansi kokukhanyisa okwenziwe.
Imidlalo yokukhwelana yezimbiza zasebusuku
Lapho ishela, eyeduna indiza ngendlela “yokuhlasela”, ishintshana ngokushaya kancane kwamaphiko ngokushaya amaphiko ngezikhathi ezithile, ihamba ngamaphiko aphakanyisiwe bese umsila ubheke phansi. Phakathi nalomkhosi, amabala amhlophe abonakala kahle eduze kwamathiphu amaphiko nangaphansi komsila weduna. Uma inyanga igcwele ekuqaleni kukaJuni, ama-nightjars ahlangana eduze kwalolo suku. Lokhu kuqinisekisa ukuthi ngenyanga ezayo egcwele, izimo zingcono kakhulu ekubambeni izinambuzane zokondla abasha.
Ukuthi ama-nightjars asongelwa ngokuqedwa yini
Inani lamabhodlela asebusuku lilinganiselwa ku-930,000-2,100,000, kepha izinombolo nezinombolo ziyancipha, ikakhulukazi eNyakatho Ntshonalanga naseNyakatho Yurophu. Ukwehla kwenhlabathi kanye nenani lezinambuzane kungenzeka kube yizizathu zokunyamalala kwamajari asebusuku kwezinye izifunda, kepha inani labantu manje liyanda futhi.
Ungayithola kanjani i-nightjar endaweni yayo
Indawo ewugwadule ephansi nezindawo ezisanda kugawulwa amahlathi kuyizindawo ezikhethwayo zalolu hlobo. Ama-nightjars ajwayele ukusebenza lapho kushona ilanga, acule ihora lonke ngemuva kokushona kwelanga futhi ngaphambi kokuphuma kwelanga. Zizwakala ebangeni okungenani elingamamitha angama-200, kwesinye isikhathi kuze kube yikhilomitha. Ubusuku obufudumele nobomile yisikhathi esihle kakhulu sokulalela ingoma ye-nightjar.
Izinyoni zivame ukuza zihlole isivakashi. Amaphiko athambile alingisa amaphiko ezimpiko aheha izimbiza zasebusuku, kepha indlela ephumelela kakhulu ukuzulisa iduku elimhlophe ngobude bengalo. Le nhlangano ilingisa ukushaya kwamaphiko amhlophe eduna futhi izodonsela le nyoni. Ungasebenzisi okuqoshiwe ngezingubhu zakusihlwa zokucula, ngoba lokhu kuthinta kabi ukukhiqizwa kwazo.
