Nightjar (tsuntsu)

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Jararfin dare mai ban al'ajabi da galibi ba'a iya gani shine kawai memba na wannan mamakin dangin tsuntsaye. Rikicin dare yana tashi zuwa wuraren da suke buya daga ƙarshen watan Afrilu, amma galibi a cikin watan Mayu, alamar farko ta dawowar ita ce mummunan waƙar tweet, wanda namiji ke rerawa a kan rassa a yankinsa.

Yadda rawar dare take

Kowane ɗayan waƙa yana da tsawon mintuna da yawa, tare da adadi kaɗan amma mafi sauri wanda ya kai kusan rabin daƙiƙa. Tsuntsayen na fitar da wadannan gajerun hanyoyin ne lokacin da suke shan iska. Wannan yana bayanin yadda take waka tsawon lokaci ba tare da tsayawa ba. Wadannan ma'auratan suna dauke da kimanin bayanan 1900 a minti daya, kuma masu lura da tsuntsaye na iya banbanta tsuntsayen mutum ta hanyar nazarin mitar abubuwa uku da kuma tsawon jimlolin.

Muna miƙa don sauraron muryar mafarki mai ban tsoro

Abin da darejars ci a yanayi

Kwari, musamman kwari da kwari, sune suka fi yawa a cikin abincin dare na dare, saboda haka wannan jinsin yafi cin abincin safiya da faduwar rana, lokacin da kwari suka fi kwazo. Nightjars suna kama da kamannin falcons, kuma kamar waɗannan tsuntsayen ganima, suna da ikon saurin juyawa cikin iska da nutsuwa.

Nightjars suna da manyan hanyoyi guda biyu na ciyarwa:

  • "Yin rarrafe", lokacin da tsuntsun ya yi gaba da gaba, yana kama kwari da suka zo kan hanya;
  • "Attack", tsuntsun yana zaune akan reshe yana jiran malam buɗe ido ko ƙwarya don ya wuce.

Nightjars suna da manyan ramuka masu fadi da yawa akan bakunansu, wanda a kusa yake da '' bristles '' - a gaskiya gashinsa ba tare da fuka-fukai ba - yana girma wanda ke taimakawa tsuntsayen su sami nasarar kamo kayan abincinsu.

Yadda mafarkai ke gani, fasali na hangen nesa

Duk tsuntsaye suna da kaifin gani, manyan idanuwa suna gefen gefen kai, wanda ke ba da kyakkyawar gani. Babu mazugi a kan tantanin ido, saboda tsuntsaye basa bukatar ganin launi kuma a maimakon haka suna da yadudduka sandunansu masu motsi-motsi. Launin membrane da ke bayan kwayar ido, wanda ake kira tapetum, yana nuna hasken da sandunan suka wuce ta cikin kwayar ido, yana ba idanun dare mafarki ƙwarewa. Wannan layin ne yake sanya idanun tsuntsu haske a ƙarƙashin hasken wucin gadi.

Wasannin wasan kwaikwayo na nightjars

A yayin saduwa, namiji yakan tashi ne da salon “kai hari”, yana sauya fuka-fukai a hankali tare da yin fika da fuka-fukan lokaci-lokaci, yana ta sama tare da tashi fikafikan da wutsiya a kasa. A yayin wannan bikin, ana ganin fararen launuka a bayyane kusa da fikafikan fuka-fuki da ƙarƙashin wutsiyar namiji. Idan wata ya cika a farkon watan Yuni, to mafarar dare suna kusantar wannan kwanan wata. Wannan yana tabbatar da cewa zuwa wata mai zuwa, yanayi ya fi dacewa don kama kwari don ciyar da matasa.

Ko dai ana fuskantar barazanar darewa da halaka

An kiyasta yawan jakar dare a 930,000-2,100,000, amma lambobi da lambobi suna raguwa, musamman a Arewa maso yamma da Arewacin Turai. Raguwar kufai da yawan kwari wataƙila dalilan da suka sa ɓarnar ɓarkewa daga wasu yankuna, amma yanzu yawan ya sake ƙaruwa.

Yadda ake samun mafarkin dare a mazaunin sa

Landsananan wuraren da ba su da kyau da kuma sabbin yankuna da aka sare itacen su ne mazaunin wannan nau'in. Yawancin dare yakan zama mai aiki a faɗuwar rana, yana raira waƙa sa'a ɗaya bayan faɗuwar rana sannan kuma kafin asuba. Ana iya jin su a nesa na aƙalla mita 200, wani lokacin har zuwa kilomita. Dumi da busassun dare sune mafi kyawun lokacin don sauraron waƙar dare.

Tsuntsaye sukan zo duba bako. Kyawawan filaye masu kamannin fuka fukai suna jan hankalin dare, amma hanya mafi nasara ita ce taɗa farin kyalle a tsayin hannu. Wannan motsi yana kwaikwayon farar fuka-fukan namiji kuma zai jawo hankalin tsuntsun. Kada ayi amfani da rakodi tare da waƙar dare, saboda wannan yana shafar haifuwarsu.

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