When Darwin said that Natural Selection was the means by which species originated, did he mean that? When you open up the book and read what he said, you find that the title, like much of what he wrote, was wrong, and Darwin himself provides the reasons why Natural Selection is NOT the origin of any species. Tough science meets rubber ducks in this bit of orange.
Read Defining Evolution Ch 10: Migration/Genetic Drift athttps://abitoforange.com/2016/03/10/defining-evolution-10-natural-selection/