Fisher's Runaway

Fisher's Runaway is a theory explaining how certain features, like bright feathers or elaborate traits, evolve in animals. It suggests that if a trait is initially attractive to mates, individuals with a more pronounced version will have more reproductive success. Over time, this preference and the trait reinforce each other, leading to increasingly exaggerated features. This process continues until other factors, such as survival challenges, balance the advantage. Essentially, it's a cycle where beauty signals good genes, but the traits can then become overly extravagant through continuous sexual preference.