Ka taƙaita labarin:  Daga tsuntsaye zuwa tsuntsaye na aljanna, maza tsuntsaye sanannu ne don nuna gashin kansu mai launi mai haske a matsayin hanyar jawo hankalin mata. Koyaya, sabon bincike ya nuna cewa tsuntsayen maza na iya zama ba su da bambanci da takwarorinsu mata a tsawon lokaci. Abubuwan da aka gano sun ƙalubalanci wani muhimmin sashi na ka'idar juyin halitta da Charles Darwin ya gabatar shekaru 156 da suka shige. Maza da mata na Choco Toucan (hoton da ke sama) duka suna da gashin tsuntsaye iri ɗaya masu launuka iri ɗaya, suna ba da shawarar wani karfi ban da zaɓin jima'i yana motsa juyin halitta na launuka masu haske a cikin gashin tsuntsaye. Maimakon launuka masu haske na tsuntsayen maza da ke bayyana saboda zaɓin jima'i - inda hali ya samo asali a tsawon lokaci saboda an gan shi a matsayin mai ban sha'awa ko siginar dacewa da kishiyar jinsi - wasu sojojin zabin yanayi suna aiki. Masu binciken sun ce yanayin da jinsin ke rayuwa a ciki, yadda yake kula da 'ya'yansa da halayyar ƙaura kamar suna yin tasiri ga gashin tsuntsayen. Zai yi wuya a lura da wutsiyar tsuntsu, amma mutane ba su san hayaniyar da kyawawan gashin tsuntsun suke yi ba. Masana kimiyya sun nuna cewa tsuntsaye sukan girgiza wutsiyarsu don su yi ƙaramin amo da ba za mu iya ji ba. Mazan tsuntsaye suna iya yin sautin infrared don su tsoratar da kishiyarsu da ke zuwa ko kuma su jawo hankalin abokiyar aurensu. Masu bincike a Jami'ar Manitoba da ke birnin Winnipeg, a ƙasar Kanada, sun nuna cewa tsuntsayen suna yin sautin da ke ƙasa da 20 hertz ta wajen amfani da wutsiyarsu kuma wasu tsuntsayen suna sauraron sautin. Yawancin mutane suna jin sautin da ke tsakanin 20 zuwa 20,000 hertz. Sa'ad da tsuntsaye suke girgiza gashin kansu, yawancin mutane suna jin motsinsa. Amma masana kimiyya sun gano cewa tsuntsayen suna jin sauti mai ƙarfi tsakanin 70 zuwa 108 decibels, bisa ga binciken da aka buga a mujallar Animal Behaviour. Sa'ad da masu bincike suka ji sautin, sai tsuntsayen maza da mata suka soma faɗakarwa kuma suka soma motsawa, sai tsuntsayen maza suka soma ihu. Masana ba su da tabbacin yadda tsuntsayen ke gano infrasound, amma sun san cewa wasu na iya jin rawar jiki ta hanyar...
Bincike ya gudanar da masu bincike a Jami'ar Wisconsin-Milwaukee. Sun auna launin gashin tsuntsaye na namiji da mace na nau'in tsuntsaye 977. Masu binciken sun gano cewa wasu jinsunan suna nuna bambance-bambance tsakanin jinsi yayin da wasu suka samo asali don haka duka jinsi suna da launuka iri ɗaya. Binciken ya kalubalanci ka'idar Charles Darwin game da zaɓin jima'i a cikin tsuntsaye.