<classify> Abaphandi beYunivesithi yasePrinceton eMelika kunye neUppsala University eSweden baxele ukuba oluhlobo lutsha luye lwavela kwizizukulwana nje ezibini, nangona bekukholelwa ukuba le nto ithatha ixesha elide, ngenxa yokuzala phakathi kweDarwin finch, Geospiza fortes, kunye necactus yabaphambukeli.  <topic>: sciencetechnology 