Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Hanyar wucewa: Idanunsu suna buɗewa jim kaɗan bayan gashin gashinsu ya haɓaka - tsakanin kwanaki 87 da 93 - kuma bakinsu na iya sassauta riƙewar nono a kwanaki 100. Sun bar jakar kwanaki 105 bayan haihuwa, suna bayyana a matsayin ƙananan kwafin iyaye kuma suna auna kimanin gram 200 (7.1 oz). Masanin kimiyyar dabbobi Eric Guiler ya rubuta girmansa a wannan lokacin kamar haka: tsawon kambi-snout na 5.87 cm (2.31 in), tsawon wutsiya na 5.78 cm (2.28 in), tsawon tsawon 2.94 cm (1.16 in), hannayen hannu 2.30 cm (0.91 in), shank 4.16 cm (1.64 in), forearm 4.34 cm (1.71 in) da kuma tsawon kambi-rump shine 11.9 cm (4.7 in). A wannan lokacin, aljanu suna tsawaitawa a kusan layi daya.Bayan an fitar da su, aljanu suna kasancewa a waje da jakar, amma suna kasancewa a cikin rami na wasu watanni uku, da farko suna fita daga cikin rami tsakanin Oktoba da Disamba kafin su zama masu zaman kansu a watan Janairu. A lokacin wannan lokaci na wucewa daga cikin jaka, samarin aljanu suna da aminci daga farauta kamar yadda suke tare da su. Lokacin da uwa take farauta suna iya zama a cikin mafaka ko kuma su zo, sau da yawa suna hawa a bayan mahaifiyarsu. A wannan lokacin suna ci gaba da shan madarar uwarsu. Matan aljanu suna aiki tare da tayar da 'ya'yansu ga duk amma kimanin makonni shida na shekara. Madarar tana dauke da yawan baƙin ƙarfe fiye da madarar dabbobi masu shayarwa. A cikin binciken Guiler na 1970, babu wata mace da ta mutu yayin da take renon 'ya'yanta a cikin jaka. Bayan barin jakar, aljanu suna girma da kimanin kilo 0.5 a wata har sai sun kai watanni shida. Duk da yake yawancin yaran za su tsira don a yaye su, Guiler ya ba da rahoton cewa kashi uku cikin biyar na aljanu ba sa kai ga balaga. Tun da yake matasa sun fi girma fiye da manya, bayyanar su a sararin samaniya a lokacin rani yana ba mutane ra'ayi na yawan jama'a. Binciken da aka yi kan nasarar da aka samu na aljanu da aka yi garkuwa da su wadanda aka yi marayu kuma aka yi renonsu a cikin bauta ya gano cewa matasa aljanu waɗanda suka ci gaba da yin sabbin abubuwan gogewa yayin da suke cikin bauta sun tsira da kyau fiye da matasa waɗanda ba su yi ba.  Tambaya: Kwanaki nawa ne gashin zaki yake yi kafin ya girma?
tsakanin kwanaki 87 zuwa 93