142 



THE DARWINIAN THEORY 



privilege that with us they have long had to 

 surrender. 



The origin of the bright colours of the male may 

 possibly be due to the selective action of the sexes 



Fig. 26. 



Bird of Paradise, male and female. 



on one another. As among deer now, and men in 

 several countries, the best fighters carry off the 

 prizes ; so among birds and butterflies the most 

 gaily or tastefully arrayed males are the most highly 



