MALES ARE PROMISCUOUS and ferociously competitive. Females -- both human and of other species -- are naturally monogamous. That at least is what the study of sexual behavior after Darwin assumed, perhaps because it was written by men. Only in recent years has this version of events been challenged. Females, it has become clear, are remarkably promiscuous and have evolved an astonishing array of strategies, employed both before and after copulation, to determine exactly who will father their offspring.
Tim Birkhead reveals a wonderful world in which males and females vie with each other as...
MALES ARE PROMISCUOUS and ferociously competitive. Females -- both human and of other species -- are naturally monogamous. That at least is what the s...