Male saiga antelopes face a serious problem that threatens to push them over the brink of extinction: so many females, so little time.

The global population of this antelope, native to the steppes and deserts of Central Asia and the Pre-Caspian region of Europe, has fallen by 80 percent to approximately 50,000. In the mid-1970s, the peak population was more than 1,250,000. Of the saiga antelopes that remain, most are female.