A cikin binciken da aka yi a shekara ta 2008, an ba da rahoton jaririn jaririn jariri a cikin girman hatsi na shinkafa. Har zuwa 18 quolls an haife shi a kowane ɗaki, amma shida ne kawai suka tsira a cikin makonni biyu na farko. Wadanda suka tsira sun kasance a cikin jakar mahaifiyarsu na tsawon makonni takwas, suna shan nono a kan daya daga cikin mahaifiyar mahaifiyar su shida don madara. A cikin mako na tara, 'yan jariri sun fita daga cikin jaka kuma a kan mahaifiyar mahaifiyar, inda suka kasance har tsawon makonni shida. Quolls sun kai ga balaga lokacin da suke da shekara daya, kuma suna da rayuwa ta halitta tsakanin shekaru biyu zuwa biyar. Bincike na 2008 game da 'yan jariri na quolls ya ruwaito cewa' yan jaririn quolls sun kasance masu girma a cikin ƙwayar shinkafa mai zurfi. Bayan wannan bincike, ana iya samun bayanai masu yawa game da bayyanar 'yan jariri a cikin ciki, inda za'a iya amfani da su don sanin yanayin uwar mahaifiyar a cikin lokaci mai tsawo.
makonni shida