Ornamental features are not obsolete. Many animals are selected for their ornamental features, which may act as heuristics for fitness (both for the opposite se

Ornamental features are not obsolete. Many animals are selected for their ornamental features, which may act as heuristics for fitness (both for the opposite sex in reproduction and for the same sex in combat/competitiveness). I know not all of the book is still considered wholly accurate, but Dawkins describes this at length in The Selfish Gene.