Intersexual selection is a type of natural selection where individuals of one sex choose mates based on certain traits. This often occurs in species where females are selective, favoring males with specific characteristics, such as bright colors or elaborate displays. These traits can signal good health or genetic fitness, making them attractive to potential mates. This process can lead to the development of pronounced features over generations, as those with preferred traits are more likely to reproduce. Examples of intersexual selection can be seen in peacocks, where males display their vibrant feathers to attract females, or in birds of paradise, known for their intricate courtship dances.