No Boys Allowed
Sometimes yourself is all you need.
San Francisco Chronicle/Hearst Newspapers via Getty Images/Hearst Newspapers/Getty Images
Endangered female California condors have an ability observed in just a few other bird species: according to new research, they can reproduce without a mate.
On October 28, researchers writing in the Journal of Heredity reported that two California condors in a captive breeding program hatched chicks that had no biological fathers.